SIG516 (SIG Sauer 516)


Sig Sauer 516 Gen2 14.5″ Barrel Upper Receiver Assembly, Semi-Auto. The SIG516 14″ upper allows operators to upgrade their current AR-15/M16/M4-type rifles from direct gas impingement systems to the SIG SAUER advanced short-stroke pushrod system. This advanced operating system reduces carbon fouling, excessive heat, and unburned powder in the action, ensuring reliability and function that is unmatched. 1/7 twist, 1/2×28 threading, 5.56 NATO chamber. These uppers are 14.5″ and need to be used on an NFA or pistol lower. Includes BCG and Charging handle. For best results use an H buffer (not included).