Brownells 75th Anniversary - A Shooting Heritage

Build or convert a rifle to run the 300 Blackout round with this complete upper assembly from High Standard. The A3 flat top upper is coupled with a 16", parkerized barrel that has a 1-8 twist and is made from 4140 steel.Upper assembly also  includes bolt carrier group, charging handle, low profile gas block, and CAR handguard.

SPECS: 16", Parkerized, 4140steel, 1-8 twist barrel, Low profile gas block, Bolt carrier group, Charging handle

HIGH STANDARD - AR-15/M16 Complete 300AAC Upper Assembly

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In Stock

Cartridge: 300 AAC Blackout

Finish: Black

Style: Complete

Length: 16

Twist: 1-8