Sons Of Liberty Gun Works M4-L89 5.56X45 NATO 13.9''BBL 13.75'' L89 RAIL W/ASR M4L89UPPER-13.9-CHF-556-ASR

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”*