Q Sugar Weasel Complete AR-15 Upper Receiver - 300 Blackout - 13"

The Q Sugar Weasel Complete AR-15 Upper Receiver in Tan pairs a 13" tapered .300 Blackout barrel with a clear anodized M-LOK handguard, built as a factory replacement upper or the start of a custom suppressor-host build.

Features:

• 13" .300 Blackout tapered barrel, 1:6 twist
• 5/8-24 threaded muzzle, Cherry Bomb muzzle brake installed
• Pistol-length gas system, adjustable gas block
• Cerakote finished upper receiver
• Clear anodized M-LOK handguard
• Bolt carrier group and charging handle included

The 1:6 twist stabilizes the full range of .300 Blackout projectile weights, and the adjustable gas block lets you dial in cycling across different loads without swapping buffers or springs. The Cherry Bomb muzzle brake gives you quick, tool-free attachment for compatible suppressors, whether you're replacing a Sugar Weasel upper or building something entirely custom.

Because this 13" barrel measures under 16", this complete upper is intended only for an AR pistol or a legally registered short-barreled rifle — attaching it to a standard rifle lower without the correct configuration violates federal law.

This upper mounts to any mil-spec AR-15 lower and ships with the bolt carrier group and charging handle already in place, ready to run.

Q builds the Sugar Weasel and its complete uppers to work as a matched system, giving builders a drop-in replacement path or a starting point for a custom suppressor-host build.