5.56 NATO AR-15 Upper Assembly – MICRO – 5 INCH BARREL / 1:5 TWIST/ 4 INCH M-LOK Handguard / A-160-817

Description

This MICRO AR15 upper receiver assembly comes ready to attach to any Mil-Spec lower receiver. The receiver is a flat top M4 forged Mil-Spec upper receiver that is CNC Machined from 7075-T6 aluminum – the hardest and most durable material of any upper. The MICRO 5″ 5.56 NATO barrel is manufactured with 4150 Chrome Moly steel and has a 1:5 twist rate & MICRO gas system. This upper assembly features a removable barrel thread protector in place of a conventional muzzle device.

• Barrel: 5″ 5.56 NATO Barrel Chrome Moly
• Twist Rate: 1:5
• Feed Ramps: M4
• Gas Block: Steel .750 Low Profile
• Gas Tube: DGI Stainless Micro-Length
• Muzzle Device: A2 Flash Hider
• Rail: 4″ M-LOK Rail
• Upper Receiver: Forged Upper Receiver
• Upper Components: Mil-Spec Forward Assist, Mil-Spec Dust Cover, and Brass Deflector

Please Note: An  AR-15 Pistol upper assembly has a barrel less than 16in length. Pistol uppers are only for use on AR-15 pistol lowers and registered Short-Barreled Rifles. Other configurations may violate Federal law. Installation of AR-15 upper assemblies with certain features including, but not limited to: flash hiders, bayonet lugs, and threaded muzzles may violate state and/or local laws.

AR-15 Overstock provides a wide selections of AR-15 upper assemblies in a variety of styles and lengths - all partial AR-15 uppers are assembled with everything less the charging handle and bolt carrier group. Our partial upper assemblies offer quality and performance that will satisfy the most demanding shooter. Better yet, all AR-15 Overstock AR-15 uppers are custom built-to-order enabling us to provide you with the best prices you will find anywhere. The quality of our AR-15 uppers are backed by our Lifetime Warranty - if any AR-15 Overstock upper assembly becomes defective, we will repair or replace it at no charge. Get your AR-15 upper assembly at AR-15 Overstock today!