Will a ar pistol upper fit on a rifle lower?

Ebba Jenkins asked a question: Will a ar pistol upper fit on a rifle lower?
Asked By: Ebba Jenkins
Date created: Thu, Aug 5, 2021 10:08 PM

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Those who are looking for an answer to the question «Will a ar pistol upper fit on a rifle lower?» often ask the following questions:

🔬 Will ar pistol upper fit rifle lower?

  • Mechanically, yes. Most pistol uppers will fit on rifle lowers. That is why having a pistol upper with rifle lowers, and no pistol lowers can be constructive possession of an SBR

🔬 Will ar pistol upper fit rifle lower assembly?

The AR-15 has an upper and lower receiver that is made from some form of aluminum. The takedown and pivot pins are usually going to be either steel or titanium. Considering the abuse of recoil and wear from breaking down your weapon for even normal cleaning, the fit will loosen. Is the movement measurable with a feeler gauge or with a ruler?

🔬 Will ar pistol upper fit rifle lower receiver?

An AR chambered in 6.5 Grendel can still use a standard M16 or AR-15 bolt carrier, because these rifles also use a typical AR-15 stripped upper receiver and a nearly identical barrel extension. The bolt itself is almost identical in its design and dimensions to a 5.56/.223 bolt, so it fits inside the typical carrier.

10 other answers

If that’s correct, then no, there should not be any performance issues putting a pistol upper on a rifle lower. You may have to experiment with different buffer weights to find the best performance. And when you’re done, you can explain to the friendly federal ATF agents what buffer weight worked out the best.

the upper receiver on a pistol is the same as the upper receiver on a rifle so a pistol upper should fit any lower unless one of the two has none standard push pins. November 4th, 2012, 11:14 AM #4 LightningMcQueen784

Yes, it will, but then it would be in an SBR (short-barreled rifle) configuration, and would be a violation of federal law if the lower receiver is unregistered. Wiki User 2010-11-22 11:06:03

A factory fresh AR lower receiver that has never been part of a firearm can be used to build a pistol, carbine or rifle. If a lower receiver is built into and registered as a pistol first, it can be stripped down and converted into a rifle in the future.

The only way to make a rifle shorter than 16" barrel is to form 1 it into a SBR. I would have to say no. Pistols have no restriction or classification based on barrel length. A pistol brace on a 24" barrel is still considered a pistol. Adding a vertical for grip with an overall length greater than 26" classifies it as a "firearm".

I'm pretty sure the lower you use with a pistol upper has to be registered as a pistol lower. This means that you cannot just swap the pistol upper on your rifle lower and "take off the stock". I believe that the receiver extension on a pistol lower is not just an extension without a stock on it.

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 AR-15 has an upper and lower receiver that is made from some form of aluminum. The takedown and pivot pins are usually going to be either steel or titanium. Considering the abuse of recoil and wear from breaking down your weapon for even normal cleaning, the fit will loosen. Is the movement measurable with a feeler gauge or with a ruler?

The uppers are still mechanically interchangeable. ETA: This is assuming you have a normal upper/lower that uses a buffer tube, not one of the tubeless pistols such as the RRA PDS. [ARCHIVED THREAD] - AR pistol uppers and AR rifle lowers question

H-K designed it to be done that way so you can upgrade your AR15 lower with an HK 416 [for a nominal fee of several hundred dollars] upper so you wouldn’t have to purchase an entire rifle. You just pop out the takedown pins, remove the old AR15 upper and replace it with the HK 416 upper and pop the pins back in and voila, it’s done!

Your Answer

We've handpicked 23 related questions for you, similar to «Will a ar pistol upper fit on a rifle lower?» so you can surely find the answer!

Is there a difference between an ar pistol lower and rifle lower?

Apr 26, 2017. #2. They are physically the same. A new lower receiver is designated "other" because it hasn't been used as either rifle or pistol. Once made a …

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Can you put a 14.5 upper on ar pistol lower?

Yes you can. You also must have a pistol. If you have a 14.5” upper and also own AR you are in violation of “Constructive Possession” with the feds (unless you own a ar type pistol).

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Can you put a 16 upper on ar pistol lower?

Current interpretation is you can go pistol>rifle>pistol just fine, but rifle>pistol>rifle is verboten. Just makje sure you put a 16"+ upper on it before you put the stock on. Posted: 6/24/2012 2:08:22 PM EDT

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Can you put an ar pistol upper on any lower?

As long as this is in reference to AR-15s, literally the only difference on the lowers between Pistol and Rifle is the buttstock, as long as the accompanying uppers are chambered for the same caliber. The adjustable buffer tube used on many AR15s will accept either pistol or rifle stocks.

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Do upper and lower matter for ar build a pistol?

The AR-15 has an upper and lower receiver that is made from some form of aluminum. The takedown and pivot pins are usually going to be either steel or titanium. Considering the abuse of recoil and wear from breaking down your weapon for even normal cleaning, the fit will loosen.

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Are ar pistol lowers the same as rifle lower?

A lower is not defined as a pistol or rifle. It needs to be a complete pistol or rifle to meet either definition. The only thing that matters is what it left the …

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Can ar pistol lower be used with rifle stock?

A factory fresh AR lower receiver that has never been part of a firearm can be used to build a pistol, carbine or rifle. If a lower receiver is built into and registered as a pistol first, it can be stripped down and converted into a rifle in the future.

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Can you buils an ar pistol on rifle lower?

Once an AR-15 lower receiver has been built as a rifle, it cannot be built into a pistol without registering it with the BATFE. This means if you bought a completed rifle from a gun shop, you can’t build that rifle into a pistol without a tax stamp.

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Is a complete ar lower a rifle or pistol?

A lower is not defined as a pistol or rifle. It needs to be a complete pistol or rifle to meet either definition. The only thing that matters is what it left the factory as. If it left as a lower or as a complete pistol then you're free to build it as either a pistol or rifle.

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Is a lower ar receiver a pistol or rifle?

One starting from nothing will begin with an AR-15 lower, also called a lower receiver. Manufacturers of lower receivers have ceased labeling their receivers as either rifles or pistols. Receivers are sold not particularly for a rifle or pistol.

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Pistol ar upper?

AR-15 5.56/.223 7.5" Cookie Cutter Upper Assembly / QuadrailAction: Semi-auto Gas System: Pistol Length Gas System Chamber: 5,56 NATO Twist Rate: 1/7 Muzzle Device: Strikes Industries Cookie Cutter compensator (reduces recoil on short barreled rifles and p..

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Do upper and lower matter for ar build a rifle?

A: That depends. If you build your AR-15 using a stripped lower receiver, you'll need to go through an FFL, fill out some paperwork, and conduct a background check. If you're building your rifle or pistol using an 80% lower receiver, you don't need to any of that in most states. Some states require it, like California.

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Can you put a rifle upper on an ar pistol?

U.S. federal law is wierd on this one. Let's say to buy an AR pistol. You can put an upper reciever on it with a barrel as long as you want and it'll still be a pistol. Completely legal. Now put a butt stock on it and it's a rifle. Still completely legal. Put it back to its original condition and it's a pistol again. STILL legal.

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Will any ar 15 lower fit any upper?

All AR15 uppers regardless of caliber will fit all AR15 lowers. The specs are military standard. Yes, was an honest question, perhaps a dumb one. I know the 308 won’t work with my ar15 lower, believe it requires a heavier duty lower, ar10 I think.

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Will any ar 15 upper fit any lower?

Can Any AR-15 Upper Fit Any AR-15 Lower? Now comes to the question of whether any AR-15 upper receiver will fit any AR-15 lower. The answer is almost. Bear in mind that the AR-15 has been around for nearly six decades.

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Will any ar lower fit any ar upper?

  • Now comes to the question of whether any AR-15 upper receiver will fit any AR-15 lower. The answer is almost. Bear in mind that the AR-15 has been around for nearly six decades. There is no telling how many different manufacturers have cranked out these guns, and there is no regulation to control them.

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Will m4e1 upper go on ar 15 lower?

The M4E1 receivers will work with with AR-15 receivers and vice versa. They are dimensionally the same as far as fitment between the receivers. The M4E1 Enhanced and M4E1 Threaded Upper receivers use a more angular forging for aesthetics compared to the milspec AR15 uppers.

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Will mcx upper fit on milspec ar lower?

You do not need to replace a standard, MIL-Spec trigger, to use the MCX upper on an AR lower receiver. If you are using an enhanced trigger, it may not have a tall enough hammer profile to move the firing pin latch out of the way in the MCX upper. It will work with a standard trigger, like those found in the M400. So I guess the final answer is ...

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Will psa ks47 upper work on ar lower?

As PSA stated in their videos released at Big 3, the lower is (paraphrase) “compatible with other companies 7.62×39 upper receivers,” which while factually true in terms of their pin placement will have a functional issue. The root cause is the combined usage of an AK-47 magazine and a “standard” AR-15 upper.

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Can you turn any ar 15 lower into a pistol upper?

Factory lowers are marked Multi for the caliber so you have the ability to put different chambered uppers on it without breaking the law. For instance, if you have an AR-15 lower marked 5.56/. 223, then that lower MUST be connected to an upper that is chambered only for that. NOTE I said CALIBER not barrel length.

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Is a complete ar lower a rifle or pistol barrel?

A factory fresh AR lower receiver that has never been part of a firearm can be used to build a pistol, carbine or rifle. If a lower receiver is built into and registered as a pistol first, it can be stripped down and converted into a rifle in the future.

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Is a complete ar lower a rifle or pistol case?

This question is directly related to whether or not a complete lower receiver (an AR-15 lower receiver with a shoulder stock, that has never been made into a rifle) is a rifle or still considered just a receiver or “Other” firearm.There are specific requirements for making a “weapon made from a rifle” which requires a lot more paperwork.

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Is a complete ar lower a rifle or pistol scope?

There has been much notice taken lately that judges are having a bit of troublewith the ATF’s interpretationof the law by which AR lower receivers are firearmsin and …

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