L89 5.56 Upper Receiver Groups with Liberty Fighting Barrels

The Sons of Liberty Gun Works L89 Upper Receiver Groups are built using our forged upper receiver, Liberty Fighting Barrels with SOLGW 4140 gas block and nitrided gas tube. These uppers are built to the same standards as our legendary rifles, and are test fired before leaving the shop. The L89 rails have 7-sided MLOK slots, with integral QD’s at the barrel nut on the left and right side. The L89 features the Drivelock barrel nut system, anti-rotation tabs and an internal dowel pin between the upper/rail to all ensure a solid lockup, with minimal POI shifts for attached laser or other VAS systems.

SOLGW Uppers Receiver Groups do not come with BCG/CH, but are available to add as an option.

Choose from:

11.5″ 5.56mm barrel, 10.75″ rail – A2 flash hider

14.5″ 5.56mm barrel, 13.75″ rail – no muzzle device

14.5″ 5.56mm barrel, 13.75″ rail with P&W SilencerCo ASR flash hider

14.5″ 5.56mm barrel, 13.75″ rail with P&W HUXWRX flash hider

14.5″ 5.56mm barrel, 13.75″ rail with P&W Plan B flash hider

16″ 5.56mm barrel, 15.25″ rail – A2 flash hider

Click here to add a SOLGW Bolt Carrier Group

Click here to add a SOLGW Liberty Charging Handle