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300AAC AR-15 Upper Assembly – 5 INCH MICRO BARREL / 1:7 TWIST / 4 INCH M-LOK Handguard / A-160-821

Icon - 300AAC Blackout AR CaliberIcon - 1:7 Twist RateIcon - 5 AR Barrel

Original price was: $269.00.Current price is: $189.00.

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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 inch 300 AAC Blackout barrel is manufactured with 4150 Chrome Moly steel and has a 1:7 twist rate & MICRO gas system. This upper assembly features a standard A2 flash hider that effectively suppresses muzzle flash. Barrel: 5 inc – [READ MORE BELOW]

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 inch 300 AAC Blackout barrel is manufactured with 4150 Chrome Moly steel and has a 1:7 twist rate & MICRO gas system. This upper assembly features a standard A2 flash hider that effectively suppresses muzzle flash. Barrel: 5 inc – [READ MORE BELOW]

160 821 alt pic

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 inch 300 AAC Blackout barrel is manufactured with 4150 Chrome Moly steel and has a 1:7 twist rate & MICRO gas system. This upper assembly features a standard A2 flash hider that effectively suppresses muzzle flash.

  • Barrel: 5 inch 300 AAC Blackout Chrome Moly
  • Twist Rate: 1:7
  • Feed Ramps: M4
  • Gas Block: Steel .750 Low Profile
  • Gas Tube: DGI Stainless Micro-Length
  • Muzzle Device: A2 Flash Hider
  • Rail: 4 inch 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 16 in 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.

Product Details: 300AAC AR-15 Upper Assembly – 5 INCH MICRO BARREL / 1:7 TWIST / 4 INCH M-LOK Handguard / A-160-821

➲ M-LOK Handguard

New for 2022, these AR-15 handguards are built to provide rugged, reliable performance. Designed with the advanced shooter in mind, these handguards are light and ergonomic, features that provide faster on-target performance and reduced fatigue. Includes robust steel mounting hardware to ensure an easy installation and a rock solid platform.

➲ A2 Flash Hider

The muzzle device is designed to perform a specific task, like suppress flash intensity or reduce felt recoil. This A2 Flash Hider is machined from quality steel and finished with an exceptionally corrosion resistant salt bath nitride for a lifetime of service. It provides effective flash suppression that preserves the shooter?s night vision by disrupting the muzzle flash when firing in low light conditions. While its closed bottom with top and side ports offers reduced dust signature when shooting from the prone position while additionally acting as a compensator.

➲ Barrel

The barrel is one of the few components that directly affect the accuracy and weight of your build. This barrel has a nitride finish for increased strength and durability. This provides not only an impressive barrel life but ensures excellent accuracy. The barrel threads are carefully threaded to the .308 standard. Optimized for stability with a 1:7 twist rate, this 300 BLK barrel can handle heavier bullets used for subsonic loads with ease.

➲ Carbine Gas Tube

An essential component to your AR15 is the gas tube, which keeps your build up and running. This carbine-length gas tube is constructed from corrosion resistant stainless steel ensuring a lifetime of service.

➲ .750 Low Profile Gas Block

The gas block is a critical link in the chain that is too often overlooked. This component ensures that your AR runs reliably. Made from high-quality steel with a smooth phosphate finish, this .750 low-profile gas block is efficiently designed to stay put with the percussion of gunfire. With its low profile this gas block allows it to fit under the most ergonomically designed handguards and rails on the market.

AR-15 Overstock AR-15 Complete Uppers offer superior quality, dependability, and performance that will satisfy the most demanding shooter. Our custom in-house manufacturing capability provide a wide selection of complete AR-15 upper assemblies in a variety of styles and lengths. Whatever you need, AR-15 Overstock has what you're looking for. Better yet, all AR-15 Overstock AR-15 complete uppers are custom built-to-order enabling us to provide you with the best prices you will find. The quality of our AR-15 complete 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 complete AR-15 upper at AR-15 Overstock today!

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Additional information

Weight 5.3 lbs
Dimensions 27.5 × 4.5 × 4.5 in
Caliber

Barrel Length

Rail/Handguard