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...