Q Sugar Weasel 5.56 NATO Upper Receiver - AR-15 Complete Upper - 13"

Q's Sugar Weasel 5.56 upper — available as a standalone complete upper with BCG and charging handle included. The Q Sugar Weasel 5.56 NATO Complete Upper provides a 13-inch 1:7 twist barrel with a 1/2x28 threaded muzzle, dropping onto any mil-spec AR-15 lower as a ready-to-run complete upper or serving as a factory replacement upper for the Sugar Weasel rifle platform.

The Q Sugar Weasel 5.56 NATO Complete Upper is a 13-inch 5.56 NATO AR-15 complete upper assembly with bolt carrier group and charging handle included, featuring a 1:7 twist 1/2x28-threaded barrel, in black.

Three features define the Sugar Weasel 5.56 upper's value as a complete upper solution. The 13-inch barrel provides a compact profile that keeps the overall rifle length manageable for SBR and short-configuration builds while maintaining enough dwell time for reliable cycling without the gas system tuning complexity that very short barrels require. A 1:7 twist rate stabilizes the full range of 5.56 NATO projectile weights from 55-grain training loads to 77-grain match projectiles, providing versatility across the ammunition spectrum without load-specific limitations. The complete upper ships with BCG and charging handle already installed, providing a true drop-on solution that requires nothing additional to begin function testing on a compatible lower receiver.

Compatible with mil-spec AR-15 lower receivers. 13-inch barrel, 1/2x28 threaded muzzle. 1:7 twist. BCG and charging handle included.

5.56 NATO. 1:7 twist. 1/2x28 threaded muzzle. Black. Includes BCG and charging handle.

Built for compact 5.56 AR-15 builds, Sugar Weasel replacement uppers, and any 13-inch application requiring a complete, BCG-ready upper from Q.

By Q. BCG and charging handle included. Standard Q warranty applies.