FN 15® M16 Upper Assembly
Military Collector Series - Complete Upper Receiver Assembly
- Caliber: 5.56x45mm
- Weight: 5.61 Lbs.
- Barrel Length: 20"
- Operation: DIRECT IMPINGEMENT RIFLE LENGTH GAS SYSTEM
- Twist Rate: 1:7 RH
- Sights: A2-style front, adjustable rear sight
Knights Armament M5 RAS Adapter rail with rail adapter covers
20” button-broached, chrome-lined barrel with A2-style compensator
M16-style MIL-SPEC bolt carrier group and HPT/MPI-tested bolt made from Carpenter 158
Matech Rear Sight