Sons of Liberty Gun Works L89 V2, Complete Upper Receiver, 223 Wylde/556NATO, 13.7" Pinned (16.5" OAL) Button-Rifled Barrel, HUXWRX Flash Hider, Low Profile Gas Block, Black M4L89UPPER-13.7-556XL M4L89UPPER13.7556XL

The SOLGW M4-L89 Upper Half comes with SOLGW’s Cold Hammer Forged version of their Combat Barrel and L89 Rail, and is available in 10.5”, 11.5”, 13.7”, 13.9” and 14.5” 5.56, with Huxwrx, NOX or ASR muzzle devices. No BCG or C/H

* 13.7”, 13.9”, and 14.5” barrels come pinned and welded flash hiders for OAL of 16”*