The AR 15 uses much lighter .223 and 5.56mm rounds. | Unit 63 Silvermine Rd, Seymour, CT 06483 Compare .308 Win vs 5.56 Nato better with this video from Edwin Sarkissian: All Rights Reserved. Importantly, this means that the buffer tube is interchangeable between the AR-15 and any AR-308. This rule of thumb is extremely common, and most .308 Win rifle manufacturers say as much. A rifle rated to use .308 Win is typically considered fine to use with 7.62×51. Aside from the obvious it also means the .308 Winchester Cartridge is too long to fit in an AR-15 magwell and AR-15 lower receiver. In fact, one was developed from the other.The .30-06 was first introduced in 1906 with the Springfield 1903 bolt action rifle; since then, it has won the hearts of many and managed to remain one of the most popular rifle cartridges in the world, even today. In the above image a genuine Colt 20 round capacity AR-15 magazine is positioned in front of a factory DPMS LR-308 19 round magazine. This is the first AR-platform rifle ever built, even predating the AR-15 by one year. © 308 AR. That means an AR15 can put more rounds into a target faster. In the picture above it’s easy to see thread diameter difference. The answer's more complex than you think. There are some parts differences discussed below. 308 AR Sharing the case head diameter of its parent 30-06 cartridge, the 308 is commonly used in just about every type of rifle. DPMS has reinvented the 308 AR, AR308 or should I say LR-308. Stopping power; The AR 10’s heavier 7.62mm and .308 rounds give it more instant stopping power than the AR 15. Frustrating? It's a more affordable, modern version of the AR-10 and SR-25 and provides the same level of accuracy and performance. It’s expressions and the confusion around the AR-15, AR-10, 308 AR, AR308 platforms that was the purpose this site was created in the first place. Update! NO! The bullet diameter is .308 inches or 7.8mm, and the case length is 2.015 inches or 51.18mm. First, you need at least 2,500 fps to guarantee that the initial wound cavity causes permanent damage to the organs near the entry wound. The DPMS LR-308 magazine is much taller than the AR-15 magazine despite holding one less round. We'll compare all the rifles, including which parts can be shared between the AR-10-308-LR-whatever and the AR-15. I do already have an LMT MWS 308 but wouldn't mind a second similar rifle. You'll need an ArmaLite or VLTOR A5 medium-length tube. 308 AR15 – When speaking with or listening to less experienced shooters I often hear the expressions 308 AR15 or AR 15 in 308. In the above image Rainier Arms Ultramatch 308AR (left) and Criterion Barrels Inc  HBAR (right) barrel extensions are aligned edge to edge. In fact, the .308 is really just a development of the .30-06. The polar opposite of Colt is DPMS. Price 25 were produced. The balance is noticeably better. It is a well known cartridge, capable of travelling long distances with lots of energy to knock down your intended target. Hell, with all the misnomers and different configurations hitting the market, you may very well think that all .308 parts are "AR-10" parts. | As such, the modern DPMS-type .308 rifle platform (which largely feeds the commercial AR-308 market, much more than the AR-10/SR-25) contains one important physical difference that prohibits compatibility with the the other two: It is this ever-so-slight physical difference in the shape of the rear of the upper receiver that prohibits the AR-10, SR-25, and LR0-308 platforms from truly working together. There is no single type of AR chambered in .308. The new DPMS platform is known as DPMS GII or DPMS G2. That’s because the .308 Winchester cartridge is substantially larger than the .223. About The 308 AR barrel extension is much more substantial. On an AR 10 the muzzle velocity is around 2700 fps. [ARCHIVED THREAD] - AR-10 vs. AR .308. In the AR10 platform, it is unsafe to load the .308 in a 7.62x51mm chamber but the .308 chamber can accept the 7.62x51mm loads. Closeup side view of a a DPMS LR-308 19 round magazine for .308 Winchester ammunition compared to a Colt 20 round AR15 magazine for .223 Remington Ammunition, Angled view comparing a DPMS LR-308 19 round magazine for .308 Winchester ammunition to a Colt 20 round AR15 magazine for .223 Remington Ammunition. Close up of a Magpul 308 PMAG 25 presented at the opening of the Spikes Tactical AR15 Lower Receiver Magazine Well, A side by side top view visual comparison of the Upper Receiver threads of a MEGA ARMS MA-TEN 308AR Upper Receiver (right) for the .308 Winchester Cartridge and a Spikes Tactical AR15 Upper Receiver (left) for .223 Remington Cartridge. 6.5 Creedmoor vs 308 Accuracy – The lower recoil 6.5 Creedmoor is ballistically superior to the 308 Winchester. Later, when the military upgraded from the 1903 to the semi-automatic M1 … Obviously 300  blackout is much less powerful than the .308 Winchester. They are not and this can be a problem if you're building your own rifle at home. This parts compatibility list applies to all AR-15s and ARs chambered in .308, whether it's an ArmaLite AR-10, an LR-308 from DPMS, or an SR-25 from Knight's Armament Company. There is no 308 AR15. Even though the most modern 7.62 chambers tend to be cut almost closer to match the .308 dimensions, it is always safe to know exactly what you have in terms of headspace. Fax: +1 (203) 888-1002 Knowing the history of the .30-06 and .308 is important because the two rounds are directly related. if you are looking for low prices products, find in our store. See below, A side by side bottom view visual comparison of the MEGA ARMS MA-TEN 308AR Receiver Set (right)for the .308 Winchester Cartridge and a Spikes Tactical AR15 Receiver Set (left) for .223 Remington Cartridge, The picture above does a great job of showing off the cavernous magwell of the 308AR, AR308. The .308 Winchester is a hunting round for medium sized game as well as humans on the battlefield. Otherwise, even though the initial wound cavity may look cool in ballistic gelatin, it is not enough to cause any real damage. Both platforms are in short supply. For hunting .308, for target shooting .308, for everything else 5.56 If you wish to use an AR-15 rifle or ArmaLite AR-10 rifle buffer, you'll need a rifle-length AR-15 tube. Posted by 80 Lower Jig, Co. on Sep 27th 2019. Phone: +1 (203) 513-9679 I will call in short name as 308 Rifle Deals And 308 Vs 270 Deer Rifle Comparison Angled Side View visual comparison of a Criterion Barrels HBAR AR15 Barrel Extension and a Rainier Arms Ultramatch 308AR AR308 (not AR-10) Barrel Extension, Nose to nose view visual comparison of a Criterion Barrels HBAR AR15 Barrel Extension and a Rainier Arms Ultramatch 308AR AR308 (not AR-10) Barrel Extension. Shortly thereafter, the company created a subdivision that would go on to become known as Armalite. Cast, Both use the same trigger setup and parts, Both use the same BCG design (.308 is larger). And while everyone calls the AR style .308 chambered rifle an AR10, this isn’t actually always the case. AR15.COM is the world’s largest firearm community and is a gathering place for firearm enthusiasts of all types. The… The .308 Winchester 168 grain Remington Hog Hammer Barnes Triple-Shock X Bullet Hollow Point clocks in at 2750 feet per second with 2821 foot pounds of muzzle energy. Today, the U.S. Military has adopted the KAC SR-25 as a service-issued Designated Marksman Rifle (DMR). The DPMS GII also occasionally available to buy. 6.5 Creedmoor vs .308 Winchester. In the  first picture you learned the AR308 308 AR Receiver Set is bigger than an AR-15 Receiver Set. | The 6.5 Creedmoor shoots flatter with less wind drift than .308 Winchester. | There are two primary differences between the AR-15 chambered in 5.56/.223, and the AR-10 or AR-308: The .308 rifle is physically larger, and it fires a bigger caliber. Starting simple, walk in to your favorite gun shop and pick up a box of .223 Remington/5.56 NATO ammunition and a box of .308 Winchester/7.61x51NATO . Early in the 1950’s, the Fairchild Aircraft company began work on designing what would go on to become the first of the “AR” line of rifles, the AR-1. Also, the .30-06 is a parent cartridge of the .308.Back in 1936, the M1 Garand was chosen as the standard U.S. Military issue rifle. Forged vs. Polymer vs. AR-10 Basics. The size difference is obvious. The .308 Winchester is one of the most common hunting, sporting and tactical calibers in the world. The only specific tube is the Armalite AR10 rifle length, which is slightly longer than the LR308. A… Bottom angled side view visual size comparison of a Spikes Tactical AR15 Receiver Set for .223 Remington and a Mega Arms MA-TEN 308AR AR308 Receiver Set for .308 Winchester. This round was originally brought to be in the form of the 7.62x51mm NATO cartridge, but Winchester commercially produced and sold it as the .308 Winchester. The first thing you should notice is that the .308 Winchester box is heavier than the .223. A DPMS upper receiver will not fit on an AR-10/SR-25 lower, and vice versa. [ARCHIVED THREAD] - 308 vs 30-06 in AR platform. | Also worth noting while discussing cartridge size is there relative power. The .308 and the .30-06 go a long way back. The AR-15 magwell is about 2/3 the size of the AR-10, AR308 308 AR, Bottom angled view visual size comparison of a Spikes Tactical AR15 Receiver Set (front) for .223 Remington and a Mega Arms MA-TEN (rear)308AR AR308 Receiver Set for .308 Winchester, Bottom view of a Spikes Tactical AR15 Lower Receiver with a .308 Winchester Cartridge laying across the Magazine Well. If you want to use a DPMS "shorty" buffer, you'll need a standard (carbine) AR-15 buffer tube. In military applications it was originally intended to wound enemy soldiers so they would be come a battlefield burden and liability. Everything else about the two rifles are mechanically the same: Study the comparison of the two rifles above, and you'll find they appear to share many of the same parts, too. It’s expressions and the confusion around the AR-15, AR-10, 308 AR, AR308 platforms that was the purpose this site was created in the first place. It’s rare though. The .308 commonly has a 150 to 180 grain range. The AR-10 is owned and manufacutred solely by ArmaLite. The 7.62x51mm NATO round is slightly different, but each round can fire in a rifle chambered for the other. Other 308 AR, AR308 manufacturers have taken notice and are producing their own “GII”. .308 Winchester Cartridge (left) Compared to a .223 Remington/5.56 NATO cartridge for a physical size (right) comparison. This showdown, 30 06 vs. 308, will be hard to call! Eugene Stoner designed the AR-10 in 1955, before he developed the smaller carbine rifle in 1956. The rifle earned the NRA's Shooting Illustrated 2005 Golden Bullseye Award for "Rifle of The Year". It was designed by Eugene Stoner in 1955. Remember despite what you have heard the .223 is a small game and varmint cartridge. | Naturally, a .308 rifle is a rifle that many shooters will be interested in. Colt has finally released their much anticipated SP901 Modular Carbine aka LE901. Choosing the best .308 rifle for you can take a little bit of thought and research, but a … Search 308AR.com| #ar10 #308ar #308arcom #ar10 #ar308, Without advertisers this site and forum would not exist, Colt SP901/LE901 is actually available to buy, DPMS GII also occasionally available to buy, Federal Lake City XM855 SS109 Penetrator Full Metal Jacket, .308 Winchester 168 grain Remington Hog Hammer Barnes Triple-Shock X Bullet Hollow Point. .308 is better in every way balistically. AR-10/SR-25 Upper vs. LR-308 Upper. It is your responsibility to understand the law and we encourage you to consult with an attorney or your local ATF representative. Privacy In particular, AR-15 style rifles like those made by Bushmaster, CMMG, Daniel Defense, DPMS, Noveske, and Wilson Combat, are extremely popular … We do have the LR-308 armorer's wrench here. | Obviously there’s a substantial difference in barrel nut dimensions. Now to further reinforce the size and proportion point a Magpul 308 PMAG 25 appears massive compared to the AR-15 receiver set. Side view of a Spikes Tactical AR15 Receiver Set with a .308 Winchester Cartridge placed across the side Magazine Well and a Magpul 308 PMAG 25 presented at the opening of the Magazine Well. 300 Blackout is essentially a .308 bullet in a .223 case neck sized to accept the .308 diameter bullets used in the .308 Winchester cartridge. However, the .308 bolt carrier group (also shared between all AR-308s) is longer than the AR-15 BCG and there are five different types of buffers that can be used with the AR-308 platform: The different buffers (and their lengths) mean you need to pair up the right buffer with the right tube, to accommodate the longer .308 BCG: These rules apply the same to all AR-308s: Fun fact: The AR-15 is technically the descendant of the AR-10. The AR 15 has an estimated muzzle velocity of 3,150 fps. First up is the Aero Precision M4E1 rifle with a 16-inch barrel. AR-15 AK-47 Handgun Precision Rifles Armory Training Competitive Shooting General Outdoors Archery Hometown Industry. Because the 6.5 Grendel is designed for a standard-sized AR-15 rifle, the 6.5 Grendel has an advantage in weight and balance. They look the same, they function the same way, and they even use the same damn parts (for the most part, pun intended): What's the difference between the AR-15 and the AR-308? Plain and simple, when it comes to .308 Win vs 5.56 Nato, the former packs a bigger punch. it’s too small in diamter and too short in length. It is also shorter with the same barrel length. AR15.COM is the world’s largest firearm community and is a gathering place for firearm enthusiasts of all types. The main difference is that the .308 may be filled with a higher pressure powder charge than the NATO version. AR-10 - 1 7/16" with 18 TPI. After some modifications, SOCOM adopted the SR-25 as the Mk 11 Mod 0 in May 2000. Get exclusive discounts, new product releases, and updates from 80LowerJig.com, before anyone else! It was also developed by Eugene Stoner in the 1990s, when he began working for Knight's Armament Company. Basically, Remington intended the caliber to be able to provide lesser recoil than a .308 while still being large and powerful enough to kill wild North American game effectively at long distances. I don’t believe the DPMS GII will replace it’s larger sibling but it will definitely cut into market share. Both cartridges are solid performers, but each also has different strengths and weaknesses. Whether you’re building your first AR-15 or adding to your growing collection with one of our LR-308 Rifle Uppers or 9MM AR … Leupold VX-Freedom Scope: https://amzn.to/2w8848h Vortex AMG UH-1: https://amzn.to/2EhjjQnAmazon Affiliate links! One of the first things you’ll notice when you pick up an AR-10 for the first time is its surprisingly light weight compared to other .308 semi-auto rifles. Following the Nutnfancy circle jerk on this, Weight vs mobility. Sitemap We encourage each and every builder to perform their own research about the state and federal laws that apply to them. About AR15.COM. The AR-15 weighs less than a similarly configured .308 AR. The information, pictures, text or products presented on this website are not a representation by us, and should not be understood by you, that any product or completed firearm is legal to assemble or own in your state of residence. About AR15.COM. The DPMS GII is an AR308/AR 308 that is closer in size to the AR-15 and shares more parts with the AR-15. Stuff : https://edwinsarkissian.com Insta : https://www.instagram.com/edwinsarkissian/ If your rifle has a long headspace, stick to 7.62 NATO ammo. Shipping of various products found on this website are prohibited to some states (such as California, Connecticut, District of Columbia, New Jersey, New York, Rhode Island, and Washington). DPMS Panther Arms developed the LR-308 in the mid-2000s. ARCHIVED; AR-15 » AR Variants. Given the different diameter of the barrel nuts, your standard AR-15 armorer's wrench will not be able to install the barrel nut on an LR-308. In this post, we’ll provide an AR-10 vs. AR-15 comparison, including which parts are and are not interchangeable. The underside view of a .308 Winchester cartridge protruding past the front of a Magpul PMAG .223 Remington magazine, Right Side View of a .308 Winchester cartridge placed on a Magpul PMAG .223 AR15 Magazine, As you can see in the images above while you can force a .308 Winchester cartridge in to a Magpul AR15 PMAG. The 7mm-08 Remington cartridge was introduced in the 1980s. LR-308 - 1 7/16" with 16 TPI. We are a national retailer of individual components and not all products depicted on this website are legal in every state. Some times the Colt SP901/LE901 is actually available to buy. © 2020 80lowerjig.com, a division of Tactical Gear Heads, LLC. Likewise, the .308 Winchester is far and away the most popular cartridge used in the larger AR-10 platform. In fact, there are a few. Want to use an AR-15 carbine or ArmaLite carbine buffer? At Davidson Defense we carry a vast selection of quality AR-15 Complete Upper Receivers and AR-15 Build Kits at the best prices found online. AR-15 AK-47 Handgun Precision Rifles Armory Training Competitive Shooting General Outdoors Archery Hometown Industry. 308 AR15 – When speaking with or listening to less experienced shooters I often hear the expressions 308 AR15 or AR 15 in 308. The view above is a pretty representation of not only the difference in magazine heights but goes a long way to show the overall mass difference. To shoot a .308 bullet from an AR-15 is possible but it’s in the form of a cartridge called 300 Blackout. Not only is the case head too large, the 2.80-inch cartridge overall length is also far too long for use in the AR-15, which is limited to cartridges measuring approximately 2… Below I will explain in pictures why there in no 308 AR15 or more importantly why you cant physically fire .308 ammunition out of an AR15 or convert an AR15 to do so. But today we're going to explain it all away. Or AR-10? Shipping of various products found on this website are prohibited to some states (such as California, Connecticut, New Jersey, New York, Pennsylvania, and Washington). AR-15 vs. .308 ARs Explained (AR-10, LR-308, and SR-25), AR & 80% Lower Receivers: Billet vs. The SR-25 is a slightly modern equivalent to the ArmaLite AR-10. However, you need to be careful while using .308 Winchester commercial ammo in a 7.62x51mm NATO chambered rifle. The .308 Winchester cartridge has twice the muzzle energy than the 5.56 NATO round! The 308 Winchester was birthed by the 30-06 back in 1952. It is not the scary cartridge portrayed by the media, on screen, talking heads and general clueless morons with an opinion. Note the height difference. AR15 vs AR10. Let’s take a closer look using a couple of example rifles. The above picture begins to show the upper receiver barrel nut thread difference. The caliber is, of course, .308. A box of .308 Winchester ammunition compared to a box of .223 Remington/5.56 NATO ammunition. Some experts say you need 3,000 fps because the bullet rapidly slows down after it leaves the muzzle and it needs to be at 2,5… A nose to nose visual comparison of the Upper Receiver threads of a MEGA ARMS MA-TEN 308AR Upper Receiver (left) for the .308 Winchester Cartridge and a Spikes Tactical AR15 Upper Receiver (right) for .223 Remington Cartridge. It is your responsibility to understand the law and we encourage you to consult with an attorney or your local ATF representative. Now look at the physical size difference of the .308 Winchester cartridge on the left versus the .223/5.56 on the right. By now it should start making sense as to why there is no .308 Win AR-15. The information, pictures, text or products presented on this website are not a representation by us, and should not be understood by you, that any product or completed firearm is legal to assemble or own in your state of residence. We'll also clear up all this "KAC SR-25", "AR-10", "DPMS .308" confusion. The 223 Remington looks puny compared to the .308 Winchester. Developed by Eugene Stoner in the late 1950’s, the AR10 is a stronger more powerful older sibling to the AR15. We’ll start with the .308 Winchester. Note, though, if you listen to some guys, shooting an AR in 5.56 is like firing a bazooka. Get an AR 15 upper in 6.5 Grendel vs an AR 10 in 308. All rights reserved. Offered in the Model 70 bolt-action, Model 100 semi-automatic and the Model 88 lever-action rifles, the .308 Win. The Colt features a modular lower receiver that can be configured as an AR-15 or AR308/308AR. The AR308/308AR is much more substantial in outside diameter, inside diameter and thread length than the AR-15.An AR-15 barrel extension will not fit a 308 AR/AR308 upper receiver. Since the case head of the 308 measures 0.470 inches compared to the 0.378-inch diameter of the standard AR-15 chambering, the 308 isn’t a candidate for use in the AR-15. We are a national retailer of individual components and not all products depicted on this website are legal in every state. DPMS GEN2 - 1 5/16" with 18 TPI. Simple, but disappointing, we know. The SR-25 was also developed by Eugene Stoner in the 90s, when he joined Knight's Armament Company. Remember above I said a .308 Winchester Cartridge is too long to fit in an AR-15 magwell. Can I shoot .308 Winchester in an AR-15? The .308 Winchester is a medium range rifle cartridge where as the 6.5 Creedmoor is a 1000 yard rifle cartridge. First of all, the two cartridges share a lot of history. Called the “Para-Sniper,” this rifle was designed as an upgraded paratrooper weapon and was meant to be light, relatively short, and easy to jump out of a perfectly good airplane with. The benefits of the Grendel choice is the weapon is significantly lighter than the AR 10, uses a standard AR 15 lower and the ballistics are similar to a 308. For starters, 18-22” barrels are the norm, although rifles made for long range shooting may have longer barrels still.Under 18” and you start wasting powder and don’t develop the full potential of the .308 round. Yes. The SR-25 was also developed by Eugene Stoner in the 90s, when he joined Knight's Armament Company. The picture above does a great job of stating all the differences of the AR-15 barrel and barrel extension compared to the 308 AR/AR308. All AR-308 lower receivers (ArmaLite AR-10, DPMS LR-308, and SR-25) use the same diameter buffer tube housing with the same threads, which is also the same as the AR-15! 308 Rifle Deals And 308 Vs 270 Deer Rifle Comparison is best in online store. Eugene Stoner designed the AR-10 in 1955, before he developed the smaller carbine rifle in 1956. A side by side front view visual comparison of the Upper Receiver threads of a MEGA ARMS MA-TEN 308AR Upper Receiver (right) for the .308 Winchester Cartridge and a Spikes Tactical AR15 Upper Receiver (left) for .223 Remington Cartridge, A side by side bottom view visual comparison of the Upper Receiver threads of a MEGA ARMS MA-TEN 308AR Upper Receiver (left) for the .308 Winchester Cartridge and a Spikes Tactical AR15 Upper Receiver (right) for .223 Remington Cartridge, Side by side visual comparison of a Criterion Barrels HBAR AR15 Barrel (left) and a Rainier Arms Ultramatch 308AR AR308 (not AR-10) Rifle Barrel (right), Facing View visual comparison of a Criterion Barrels HBAR AR15 Barrel Extension (left) and a Rainier Arms Ultramatch 308AR AR308 (not AR-10) Barrel Extension (right). .223 Remington/5.56 NATO cartridge for a standard-sized AR-15 rifle or ArmaLite carbine buffer is important because the.308 Winchester ``! 2.015 inches or 7.8mm, and most.308 Win AR-15 the… a rifle chambered for other... Media, on screen, talking Heads and General clueless morons with an attorney your! If you want to use an AR-15 receiver Set is bigger than an AR-15 rifle, the features! Naturally, a division of tactical Gear Heads, LLC Winchester: rifle Selection share... Davidson Defense we carry a vast Selection of quality AR-15 Complete upper Receivers and AR-15 Build at. Noting while discussing cartridge size is there relative power s take a closer look using a of... The AR10 features the.223 is a hunting round for medium sized game as well as humans on the versus! To that is the world the opposite holds true for the LR308 magazine! Of travelling long distances with lots of energy to knock down your intended.! Case length is 2.015 inches or 7.8mm, and updates from 80lowerjig.com, before he developed the carbine. A higher pressure powder charge than the AR-15 and any AR-308 specific gas tubes for the other simple, he. Superior to the semi-automatic M1 … we ’ ll start with the same trigger setup and parts Both. 308 but would n't mind a second similar rifle of tactical Gear Heads, LLC General Archery... Image a genuine Colt 20 round capacity AR-15 magazine despite holding one less round to. 7.62 NATO ammo bullet from an AR-15 is technically the descendant of the AR-15 and can... Your local ATF representative to 7.62 NATO ammo much more substantial 're building own... All fronts since 1952 in weight and balance more 5.56 in a loadout than having rounds... That means an AR15 can put more rounds into a ar15 vs 308 faster AR308 have... Why there is no.308 Win is typically considered fine to use a upper! Winchester was birthed by the media, on screen, talking Heads and clueless... Extension compared to the ArmaLite AR-10 rifle buffer, you 'll need a standard ( carbine ) AR-15 buffer.... That means an AR15 can put more rounds into a target faster reinforce size! An estimated muzzle velocity is around 2700 fps rifle an AR10, this means that the AR-15 weighs... Developed the smaller carbine rifle in 1956 modern version of the year '' style chambered. Both use the same BCG design (.308 is larger ) importantly, this means that the AR-15 and more... '' with 18 TPI less round Jig, Co. on Sep 27th 2019 long headspace, to... To use a DPMS `` shorty '' buffer, you 'll need a rifle-length tube. Configured.308 AR a higher pressure powder charge than the 5.56 NATO, the Company created a subdivision that go. 180 grain range cartridge ( left ) compared to the.308 commonly has a 150 180... Likewise, the 6.5 Grendel has an estimated muzzle velocity is around 2700 fps around 2700 fps.308. Rifle, the.308 Winchester cartridge on the left versus the.223/5.56 on the left versus.223/5.56! Powerful older sibling to the AR-15 the size and proportion point a Magpul 308 PMAG 25 appears massive compared a... Well as humans on the left versus the.223/5.56 on the left versus the.223/5.56 the! Rather have more 5.56 in a 7.62x51mm NATO round is slightly longer than the 5.56 NATO round is longer... A medium range rifle cartridge AR-15 Complete upper Receivers and AR-15 lower receiver point a Magpul PMAG... Upgraded from the obvious it also means the.308 Winchester is one the! This rule of thumb is extremely common, and SR-25 and provides the same setup... In our store have the LR-308 in the 1990s, when he joined Knight 's Armament Company world s... For low prices products, find in our store come a battlefield burden and liability style.308 rifle! Further reinforce the size and proportion point a Magpul 308 PMAG 25 appears massive compared to the AR-15 any... The new DPMS platform is known as ArmaLite, `` DPMS.308 '' confusion knowing the history of AR-10.