Technician Complete Upper Receiver – 16″, 5.56mm NATO, Stellar Black

Technician Complete Upper Receiver

The Technician Complete Upper is a no-compromise, ready-to-install upper for shooters who demand aircraft-grade tolerances, everyday reliability, and modular performance out of the box. Engineered on Stellar matched standards and assembled to rigorous QC, this 16” 5.56 NATO upper blends precision parts with field-proven systems: a mid-length gas system for smooth recoil and reliable extraction, an M16-pattern nitride BCG for longevity, the Throttle ambidextrous charging handle for positive manipulation with gloves, and our V6 QD muzzle brake for predictable, controllable muzzle rise.

At the heart of the build is the Stellar Anglelock handguard — a slim, rugged free-float rail that locks to the upper with our proprietary Anglelock interface for zero-play rigidity and rapid indexability. Whether you’re building a duty rifle, a competition gun, or a precision trainer, the Technician upper gives you a drop-in solution that’s ready for optics, furniture, and mission.

Backed by Stellar’s LEGACY commitment to fit and finish, the Technician Complete Upper ships inspected, torqued to spec, and packaged with a certificate of conformity.