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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.
Hey Folks,
I have an AR Assembled Upper for sale
This could be your next pistol or SBR build
Aero Precision "Slick Side" Upper w/o forward assist
10.5" AR-Stoner 5.56x45 Medium Contour 1/7" twist Chrome moly melonite barrel
Low profile gas block
Yankee Hill Machine (YHM) 7.29" Carbine...
Parts list:
Matrix arms 9 1/2 keymod rail/rail secton
Psa 7 1/2 556 barrel
Psa upper
Kak flash can
No bcg or charging handle
No sights
Upper runs flawlessly, gas block is tuned perfectly no gas in the face. I know for sure it can run steel case if you're into any of that type of AR blasphemy :)
Lower not included
We got the wife her commuter car, and since we didn’t need the $ from this I have new plans for It!...
The Road is calling me...
I really wanna take another road trip before they cut my ankle open again and I’m laid up for who knows how long... hit some outta state gun...
1. 8 inch Ballistic Advantage barrel on Anderson Sporter upper. That means no forward assist or dust cover. Yep... it's rattle canned green because ghetto-blaster is life.
2. Troy Industries VTAC 7.2" Battle Rail. Box has all the doo-dads it came with.
3. MaTech rear sight and KAC front sight...
Up for sale. SW WA, Vancouver area, Clark County area.
AR upper. Consisting of:
AR Stoner lightweight barrel. 1-8 twist. 223 Wylde. 4150CV steel. Melonite Coated. M4 feed ramps. Mid length gas. Steel Melonite low pro gas block. Can shoot .223 or 5.56 ammo.
Standard M4 upper receiver.
AR Stoner...
I have a Cav Arms lower collecting dust, and it turns out the magwell is compatible with mags for a .45 upper. Anybody got a complete one around (preferably factory)?
Thanks for looking!
This is a brand new 11” Sig DI upper, unused, in box, with BCG and charging handle. No accessories have been mounted. Offers considered. Bought the pistol for the lower, so this is extra.
$400