The .300 AAC Blackout round was designed to fit and function within the standard mil-spec M4—while delivering ballistic performance on par with the 7.62x39mm. With subsonic, supersonic, and barrier-penetrating loads available, 300 BLK is as versatile as it is effective.
The Anderson® 300 BLK Pistol Upper gives you all sorts of options for your next build. It features a 10.5" heavy barrel for accuracy, and comes with a pistol-length gas system that will cycle subsonic ammo without issue. The adjustable gas block lets you tweak the gas system to your liking.
And the best part? Anderson makes most of their components in-house at their Hebron, Kentucky facility—meaning they can control quality like no other. So while the price says "entry level," the built quality and finish are well beyond.
PLEASE NOTE: Bolt carrier group and charging handle not included.