This is a lightly used Advanced Armament Corp. AR-15 Upper Receiver Assembly in 300 AAC Blackout is a pin-on, ready-to-shoot top end for use with any standard AR-15 lower receiver.
Has 220 rounds through it, all factory, subsonic & supersonic and flawless with every shot. Selling to finance an SBR in the same setup. Save money on this great deal!
The Mil-Spec 4150 chrome moly vanadium steel barrel comes equipped with 1 in 7" twist rifling, M4 feed ramps, a low profile steel gas block, and is finished inside and out with a protective black nitride treatment for superior durability and corrosion resistance. The muzzle is threaded with a 5/8"-24 pitch for easy installation of a silencer, and is topped off with an effective AAC 51T Blackout flash hider.
The upper features a forged M4-Style flat-top receiver onto which a Knight's Armament free floating URX 3.1 Quad Rail System is rigidly attached. The heat-treated, full auto bolt carrier is finished in a slick Nickel Boron coating, and comes equipped with a properly-staked gas key and Carpenter 158 steel bolt assembly.
This 16" 300 Blackout upper utilizes the versatile carbine length gas system, a good choice for this cartridge if various weights and types of ammunition are to be used. Most subsonic and supersonic loads, fired from either a suppressed or unsuppressed gun, are compatible with this configuration. However, some subsonic ammunition may not always cycle reliably under adverse conditions or in a severely fouled firearm without a sound suppressor attached to provide extra backpressure.
Upper Receiver: A3 Flat-Top
Barrel Length: 16"
Barrel Contour: Medium
Barrel Material: 4150 Chrome Moly Vanadium Steel
Muzzle Thread Pattern: 5/8"-24
Chrome Lined: No
Barrel Finish: Black Nitride / Melonite
Twist Rate: 1 in 7"
Chamber: 300 AAC Blackout
M4 Feed Ramps: Yes
Muzzle Device: AAC 51-T Blackout Flash Hider
Gas System Length: Carbine
Gas Block Diameter: 0.750"
Handguard: Knight's Armament URX 3.1 Quad Rail, Free Float
Bolt Carrier Assembly Included: Yes
Bolt Carrier Type: Mil-Spec, Nickel Boron Finish
Additional Technical Information
Suitable for use with Subsonic or Supersonic loads, either Suppressed or Unsuppressed
Compatible with all standard AR-15 magazines, including Magpul Pmags (Not Included)
As new, the only marks on it are on the right side of the rail where the sling mount and flashlight mount rubbed. Barrel is as new in every respect. Cleaned, and as good as new!
I CAN SHIP USA ONLY, AND TO WHERE ITEM IS LAWFUL.
I CAN TAKE MONEY ORDERS, OR PAYPAL OR CREDIT CARD + 3%