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ar upper
The AR-57, also known as the AR Five Seven , is a Lower receiver for the AR-15/M16 rifle and an Upper receiver, firing 5.7×28mm rounds from standard FN P90 magazines. It was designed by AR57 LLC and is currently produced by AR57 of Kent, Washington, USA. The AR-57 PDW Upper is a new design on AR-15/M16 rifles, blending the AR-15/M16 lower with a lightweight, monolithic upper receiver system chambered in FN 5.7×28mm. This model is also sold as a complete rifle, supplied with two 50-round P90 magazines. The magazines mount horizontally on top of the front handguard, with brass ejecting through the magazine well. Hollow AR-15 magazines can be used to catch spent casings.
Unlike the standard AR-15 configuration which uses a gas-tube system, the AR-57 cycles via straight blowback. A full auto version exists marketed as a competitor to the P90 and other personal defense weapons.
Last of my spare uppers
All of this stuff was purchased new by me and assembled at a gun shop
VLTOR MUR 1A upper with forward assist
Colt charging handle
Aero bolt carrier group
Colt 10.3” barrel -new- 13629 new cage code
Geissele Mk8 9.3” SMR
5.56 Q cherry bomb
5.56 Q blast shield
$700...
For sale is a Stern Defense 8" 9mm AR Upper with around 100 rounds through it. Stern Defense is an awesome product--you can mount it to any standard AR Lower and use their mag conversions in the magwell for Glock, M&P, Sig320, Beretta and possibly others. Cheapest I see this in completed...
I am selling an AR15 upper
Oregon Rifle Works FDE upper
Oregon Rifle Works 9" handguard
Ballistic Advantage 10 1/2 inch barrel, 5.56, 1/7 twist, 4150 steel, unknown round count
Diamondback muzzle brake
Trade interests, 16 inch upper or S&W M&P Compact in 22.
Brand New HK MR556 A1 Complete Upper Receiver/Barrel Assembly HK 16.5 inch cold-hammer forged barrel, upper receiver with forward assist, extended convertible charging handle, HK Free Floating Rail System handguard
Complete MR556 Bolt Group Assembly
Tungsten Filled HK Proprietary Buffer
HK...
If you were to "permanently" attach an AR upper and lower together, which parts (besides FCG) would be unserviceable?
Are there any other firearm platforms with similar limitations of having some unserviceable parts once the firearm is assembled?
I decided to sacrifice a lower and upper to...
I do a bit of traveling and take my 16” upper with me. I’m looking for a bag that it would fit into and not be sticking out while broke down. As well as a bit of protection. I have my standard GH bag and it does all I need. But I can’t get a full size upper into it without having the muzzle...
Just looking for AR upper. something cheap, just doing a cheap build. so PSA stuff would be around the price range. (Does not have to be an exact match from my description) shoot me a pm.
Need:
-upper receiver
-pins
-BCG
-barrel (16 inches preferably rifle length/needs to be 556 caliber)
-gas...
Anderson Manufacturing upper reciever
BCM quad rail handguard
Bravo Company AR-15 Barrel 11.5" 5.56 NATO 1:7 Carbine Length Govt. Profile
BCM ambi charging handle
YHM QD flash hider
Bear Creek Arsenal M16 bolt
Daniel defence front sight post
Strike Industries Collar Adjustable Gas Block
cobalt...
looking for AR uppers,
17, 34 slides
10/22 parts or guns
I have various things to trade, or trade with cash, or if you wanted to buy thats fine too
I have a timney trigger alpha gen 3-4 (low round count, comes with box and all parts) 150msrp
I hate a tri star KRX shotgun, ar style 12g, with 2...
I have the following for sale:
1. 16" AR upper with nitride BCG and charging handle - $350, $300
2. Magpul back up sights black - $50
3. New 2x Flat wire buffer spring x2 - $15 each
4. New 2x Brownell Carbine Buffer - $10 each
I live in the University of Washington area and would expect...
Up for sale, Southwest, Washington, Vancouver area, Clark county area.
Ar-15 upper receiver. SAA logo. Made by Aero.
YHM Yankee Hill free float handguard.
Includes the barrel, nut and everything for mounting it up.
Used, but not abused. Add your own barrel and bolt and you are good to go.
I...
Aero Precision Upper, 16” Ballistic Advantage Barrel CM barrel, carbine length gas system, aero gas block and tube, 556 nato chamber, 1/7 twist. AP hand guard. Built by me (I’m a certified AR-15 armorer). Shot to test function only. Includes charging handle, but NO bolt carrier group. $250...
Like the title says, I need some help assembling my 9mm carbine upper. I have all the parts, except a few small parts. I have some ammo and parts to trade, or I can bring you a six pack or something. I need FSB installed on barrel and the barrel installed to the upper. Thanks!
This upper probably has about 300 rounds through it. Works perfectly on my Glock magazine lower. Standard milspec rear charging handle.
Photos show upper with single port ASR muzzle brake (quick disconnect system for SilencerCo suppressors) which can be included for slightly more or removed...
Brand new (unfired, except whatever testing the manufacture did) in foam wrapper, 5 inch 9mm AR upper, made by Alpha Shooting Sports. Includes charging handle and BCG (it is *complete*!). Barrel is threaded 1/2x28. You can find more details about the upper here...