The M16 and AR-15 use the same polymer buttstock, forged buffer tube, and forged aluminum (7075-T6) in their lowers. What's the difference between the AR-15 and the M16, a military weapon? The other difference is the lower reciever. The hook at the top of the M16 hammer engages the automatic sear. These fully automatic rifles look identical to the typical AR-15. Basically, is there anything other than what I mentioned above that would demand a much higher price for an M16A1 over an M16? Many M-16's were upgraded to A1 status by putting A1 uppers on older lowers, though. 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. Difference between lower receivers? The selective fire has varied between Semi/Full Auto, and Semi/Burst throughout the years. You can buy a nearly finished AR15 receiver, with the locking pin holes and interior machining already done, and all you have to do is thread the rear for the stock tube. Nowadays, the AR-15 is the most popular rifle in America. After Colt won it’s manufacturing contract, the M-16 was first shipped to troops overseas in Vietnam in 1964. There are many opinions and versions around the Internet about the actual differences between the M16 and AR-15. Is the difference between these two lowers purely cosmetic? WIth four variations in service with the United States Military (yes, there are still rear-echelon units with the M16A1), the rifle has developed over time to suit the constantly advancing and adapting needs of our warfighters overseas. ArmaLite decided to sell them the production rights to the AR10 and AR15 in 1962 after the many failed attempts for the AR 10 to catch on in high enough numbers so it was mass produced on a large scale. Be the first to know about our product launches and deals. These two rifles are nearly identical in materials and construction. For example, which gas system can be installed on what barrels? 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. A: Sure, if you have around $25,000. This Is What Sets AR-10 and AR-15 Rifle Apart The AR10 and AR15 are solid workhorse weapons, and pretty interchangeable in terms of their style and functionality, but there is one pretty big, fundamental difference: Caliber. Are there internal differences,or additional holes drilled in them or any other obvious differences or is the difference just the internal parts? Proudly Made in the United States of America. AR15 Stripped Aero lower Gen 2. jerry, Mar 20, 2011. jerry, Mar 20, 2011. We show you step by step using the 80% Arms easy jig. Prices have doubled in the past 10 years or so, which is currently a lot better return than the stock market. Let's see how the M16 is different from the AR-15 and we'll also cover the M4 carbine. Video of Comparing M16 to AR-15 Lower Receiver Full auto lowers are always 0.5mm thicker then AR15 lowers, in every corner of the lower receiver. That's the going price for an early Colt M16 transferable machinegun. Colt continued to manufacture commercial AR-15's with slab-sided lowers up through 1991, though. AR15: The ArmaLite AR-15 is a selective-fire, 5.56×45mm, air-cooled, gas-operated, magazine-fed rifle, with a rotating bolt and straight-line recoil design. In addition, the M16 selector will be capable of being rotated to the third, auto, position (pointing to the rear) while in the receiver; this is possible because of an additional index on this selector. M4e1 stripped Aero lower. Let's see how the M16 is different from the AR-15 and we'll also cover the M4 carbine. The Marines were the last holdout, but eventually moved towards adopting the M4 as well force wide. AR15 vs. M16 vs. M4 – What’s the Difference? Now you know the AR and M16 are more similar than they are different. Difference between lower receivers? An AR15 is semiautomatic only. Many companies still sell their lowers with M16 trigger pocket dimensions, they are just missing the proverbial "third-hole".Drilling that third hole is what legally changes your AR-15 from a semi-automatic rifle, into an illegal machine gun. It rests above the safety lever and behind the hammer and trigger, allowing the M16 parts kit to provide all three modes of fire. While the AR-15 was derived from the M-16, there several distinct differences. And what most people don’t realize, is that the military has also tested semi-automatic M16s as well, which later earned designations as the famed Mk12 Mod 0. It is your responsibility to understand the law and we encourage you to consult with an attorney or your local ATF representative. So how exactly does the M-16 differ? Also, that receiver does not have to be completely built from scratch. OK...That said,my question is,Is the lower reciever different on an ar15 than on the M16 other than the markings for safe/semi/full auto. Submerge your raw lower in chemical de-greaser for 30 minutes. The primary differences between a select fire M16 receiver and a semi-automatic AR15 receiver is that the select fire receiver has some extra material … Based on the .308-caliber AR-10, the smaller AR-15 was favored by military brass for its maneuverability, ammo capacity, and surprising wounding ability. The M4 carbine was later introduced, further blurring the lines between Stoner's semi- and fully automatic black rifles. Lv 6. Considerations While we have discussed some of the history of upper receiver types in this post, the A1, A2, A3 and A4 classifications of upper receivers refer to how the military distinguished each of the M16/M4 model setups. While the AR-15 was derived from the M-16, there several distinct differences. Owning these parts together is called "constructive intent" and is illegal under federal law. It only requires that it be less than %80 complete. The main difference between the A3 and A4 is that the latter includes M4-style feed ramps, which serve the purpose of complementing the feed ramps found on an M4 barrel. An M4A1 in the hands of a United States Army Soldier. If you get a factory made Colt M16 A2 in new (never fired) condition, it may run you around $25,000 or more. 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). ArmaLite decided to sell them the production rights to the AR10 and AR15 in 1962 after the many failed attempts for the AR 10 to catch on in high enough numbers so it was mass produced on a large scale. It’s a small percentage of the work. The parts of the M16 and AR-15 are the same with the exception of the hammer, trigger, disconnector, selector and bolt carrier. Shop for cheap price Difference Between Ar15 And M16 Lower Receiver And Flat Dark Earth Lower Receiver Kit . We are a national retailer of individual components and not all products depicted on this website are legal in every state. The AR-15's lower parts kit is not capable of providing these two functions and can only afford semiautomatic fire -- one round per trigger squeeze. All Rights Reserved. They are not and this can be a problem if you're building your own rifle at home. We encourage each and every builder to perform their own research about the state and federal laws that apply to them. The most noticeable difference is that the civilian AR15 lower receiver does not have the third trigger pin hole for the auto sear above the safety selector. How To: Dissasemble & Clean an AR-15 BCG (Bolt-Carrier Group). Gunco Guest. The M16 selector has a number of additional cut-outs and can be easily distinguished from the AR-15 version. There are so many of them available in new calibers and configurations, it can be difficult figuring out what 80 percent lower is what - and more importantly, what you might want to build. They are not and this can be a problem if you're building your own rifle at home. There are some good … The M16's lower parts kit uses a different trigger, disconnector, hammer, and safety selector lever in tandem with an auto sear to provide three-round-burst and fully automatic fire. Check out our guide on building a mil-spec AR-15. Shop for cheap price Difference Between Ar15 And M16 Lower Receiver And Flat Dark Earth Lower Receiver Kit . Thanks for the quick replies. Initially offered primarily to Special Operations troops, the M4 (and M4A1) filled the role for a more compact weapon platform for urban environments, and for vehicle crewmembers with less space for a full size rifle. Again, material is removed to prevent the bolt carrier on an AR15 from tripping an auto sear. I can barely afford to shoot my AR's one shot at a time! The main difference between an AR-15 and an M16 lies in the lower receiver. Technically, 80% lowers are stripped by nature, and do not need to be referred to as “stripped lowers”. With an estimated 10,000,000+ in civilian hands, it has earned the well-deserved moniker, “America’s Rifle”. The .223/5.56 AR-15 rifle was a direct evolution of the 7.62×51 AR-10, which was developed by Eugene Stoner in the 1950’s. The trigger pocket is also typically milled to different dimensions to prevent the acceptance of an auto-sear as well. AR15 Stripped Aero lower Gen 2. A stripped AR15 80% lower receiver. Shown with the safety lever removed, the AR-15's lower receiver (even if "mil-spec") does not have the necessary space to accept an M16's auto sear. As far as connecting the Rifle Upper to a Pistol Lower yes you can connect them together, it is all about the wording on the 4473 and bound book, that is what will get you in trouble. The original AR15 (before it picked up a military name) was fully-automatic, as well as plenty since then. The AR-15 came first, in 1947; the M16 a decade later. There are many opinions and versions around the Internet about the actual differences between the M16 and AR-15. Is the difference between these two lowers purely cosmetic? If you are looking for Difference Ar15 M16 Lower Receiver And Getting To Know You M16 Rifle vs M4 Carbine comparison. A good place to look is here: AR-15 Vs. M16 Parts Ill show a couple of photos from Your Firearm Resource. Q: Can I legally build an M16 from an AR-15? AR15 Forums. A lot of AR parts manufacturers like to label things meant for .308 rifles as "AR-10" parts. By 1963 the weapon was being sold in a semi-automatic version to the public and its M16 automatic version was being pitched to the military. The M16 was always fitted with a 16" to 20" barrel. The M16 disconnector has an extra "tail" behind its spring notch to work with the safety lever. While the AR-15 was derived from the M-16, there several distinct differences. Mar 20, 2011 #4 . The AR-15 shares many similarities across its available configurations. The M16 was made by Colt to be little more than a fully automatic AR-15 but today, there are loads of configurations available for both rifles. (AR-15, AR-10, M4, M16, AK-47, and More!) They guide the drill and provide precise hole placement so a valuable receiver is not destroyed. M16 lower receivers may also be milled to slightly different dimensions to accommodate the full auto fire control group. I purchased an Anderson AM-15 lower receiver but saw a post for an Aero M4E1 receiver. It is your responsibility to understand the law and we encourage you to consult with an attorney or your local ATF representative. The extra pin holds the auto sear in place. - AR-15 Lower Receiver . ATF recommends not having any of the M16 versions of these part installed in an AR-15 because this can result in you being charged with possession of an unregistered machinegun. The M-16 has remained with a 20” barrel from the time of it’s conception, which has become increasingly cumbersome as our wars have largely moved to densely-packed, urban environments. Doing so is illegal, since machineguns cannot be manufactured without special licensing and case-by-case approval from the ATF. Q: Can I install any M16 parts kit in my AR-15? To start, let’s talk a little bit about the history of these two rifles to get a sense of their purpose. Shipping of various products found on this website are prohibited to some states (such as California, Connecticut, New Jersey, New York, Pennsylvania, and Washington). These are where the similarities between these two rifles end. Home Defense: AR-15 vs. This hole is were a hammer block (often call an auto sear) goes that help ensure the hammer does not follow the bolt close causing a misfire in full auto or three round burst. But the M4 carbine, introduced in the 1980s, is yet another departure from the AR's original design. Only the early M-16 variants (Colt 601, 602, etc) had slab-sided lower receivers. This select-fire, air-cooled, gas-operated, magazine-fed rifle was designed to provide infantrymen with a new and lightweight rifle, one that could be carried more easily than the large 7.62mm NATO rifles then in use by the military. We are a national retailer of individual components and not all products depicted on this website are legal in every state. This price difference is due to the National Firearms Act of 1934, the Gun Control Act of 1968, and the Hughes Amendment of 1986. Stripped 80% lower Receivers. The first ones were no more than simple scaled down versions of the AR-10. Nonetheless, this disparity is not considerable. The AR-15 was designed in 1956 by Eugene Stoner of ArmaLite, an American small arms company based in California. The main difference between an AR-15 and an M16 lies in the lower receiver. The M16's safety lever is fabricated with extra channels and shoulders to provide safe, semi-, and full-auto function. Hell, with all the misnomers and different configurations hitting the market, you may very well think that all .308 parts are "AR-10" parts. So, what are the differences? Hell, with all the misnomers and different configurations hitting the market, you may very well think that all .308 parts are "AR-10" parts. Facing financial difficulty, ArmaLite sold the AR-15 to Colt in 1959. This price difference is due to the National Firearms Act of 1934, the Gun Control Act of 1968, and the Hughes Amendment of 1986. There are endless questions when it comes to this topic, but we tried to answer the most common ones. The M16 trigger has a small notch cut into the far end to accommodate the M16's disconnector. Well, let’s go ahead and break this down for you like a fraction. To allow the auto sear to provide full-auto function, the M16's bolt carrier must be fabricated different from an AR-15's "commercial" bolt carrier group. Thanks guys,thats something I have always wondered.A few years back I got into a couple of M1 carbines and as I studied the different variations of the gun I would notice the little differences there were between the M1 and M2 and what made them work.I have had an AR15 for 25+ years and I am just getting into building them so I am always wanting to know how they work. One of the most obvious differences between the AR-10 and the AR-15 is the caliber. The AR-15 traces it’s lineage back to 1956, when Armalite (then based in Costa Mesa, California), and Eugene Stoner designed a lightweight, gas-powered, selective-fire rifle for the United States Military. Answer Save. A soldier in Vietnam with the XM16E1, firing fully-automatic, while puffing a cigarette. That includes using an 80% lower. Re: What's the diff between M16 and AR15 (mechanically & leg The differences are : Mechanically the lower receiver has an extra hole machined to pin the auto sear in place above the selector switch (also some manufacturer omit the machining inside the lower receiver to allow installation of an auto sear). AR-15 vs. M16: What's the Difference? The M16 LPKs and sears should be OK to own, but there is not a reason to own them without a M16. The primary differences between a select fire M16 receiver and a semi-automatic AR15 receiver is that the select fire receiver has some extra material removed and a hole drilled for an additional pin running through the trigger housing. The AR-10 utilizes the .308/7.62x51, while the AR-15 uses the .223/5.56 x 45 cartridge. M16 lower receivers may also be milled to slightly different dimensions to accommodate the full auto fire control group. When comparing an 80% lower to a stripped lower, a few key differences arise: The mil-spec AR and M16 use forged 7075-T6 receivers. The lower receiver and other key components on the AR-10 are also somewhat larger than on the AR-15… 80% lowers! A lot of AR parts manufacturers like to label things meant for .308 rifles as "AR-10" parts. We stand behind all our products and we’re here to support you. Ratings: +0 ... is the magwell in the front is "flat" and cut in a little deeper to expose the bottom "lip" were as a ar15 lower kind of bulges out. There have been "drop-in" auto sear (DIAS) units made for the AR-15 by licensed FFL manufacturers for the AR-15's receiver, but these are not available for sale to the public and installing or using is still prohibited without licensing. An M16 is a select fire military weapon that allows the shooter to select between semiautomatic fire, full automatic fire (the M16-A2 has the 3-round burst capability instead of full automatic). With so many variations available now from the Pistol to SBR, or a service rifle to SPR or hunting variety, the AR-15 has developed into a platform suitable for the every man, and all of their needs. To understand the different types of AR platform rifles, you first need to start with a little history. All it needs is milling and it will be ready to accept the LPK. The original AR15 (before it picked up a military name) was fully-automatic, as well as plenty since then. Is there a difference between the M16 and AR15? imize the possibility of misplaced M16 parts, but on most non-Colt rifles, M16 parts will fit in place of. If you're a gun owner getting into the AR platform, you've already seen references to the M4 and M16, two military-issued rifles currently in service. It was designed by Eugene Stoner and it is based on the Armalite AR-10 rifle. Just looking at the height of the high shelf and the low shelf, you can see the difference between them. However, this is not a rule. m16 pocket lower, AR15 to M16 Class 2 Drilling and Check Fixtures For Class 2 manufacturers to easily and accurately place the holes for factory select-fire components into a previously semi-automatic-only weapon. Materials used in the lower receiver are almost identical here. To understand the different types of AR15’s, you first need to start with a little history. So what’s exactly the difference between the M16 or AR15? Home Forums > AR 15 Forum > AR Talk > How to tell the difference between AR-15 and M16 Discussion in 'AR Talk' started by anhiciano, Jun 21, 2007. As inventory dries up, prices will continue to climb. After 30 minutes, remove the raw lower and place it in the oven. There are minor difference between a civilian AR and a military M4 or M16. The AR-10 utilizes the .308/7.62x51, while the AR-15 uses the .223/5.56 x 45 cartridge. You can buy a nearly finished AR15 receiver, with the locking pin holes and interior machining already done, and all you have to do is thread the rear for the stock tube.