Sons of Liberty Gun Works L89 V2, Complete Upper Receiver, 556NATO, 13.7 Pinned (16.5 OAL) Button-Rifled Barrel, B&T Surefire Rotex Compatible Flash Hider, Low Profile Gas Block, Black M4L89UPPER-13.7-556-SF
These L89 Upper Receiver Groups are built using SOLGW forged upper, V2 Button rifled barrels, their V2 4140 gas block, and offered in a variety of length and muzzle device options. BCH and Charging Handles are not included.
