I came across an M4 comparison chart. Its compares the Colt 6920, LMT, Noveske M4 Light Carbine, Sabre Defense XR15-A3 M4, S&W M&P15 CMMG 16″ M4 Carbine, Stag Model 1, Bushmaster BCWA3F 16M, Rock Rivers Arms AR1251X, Armalite M-15A4C, Olympic K3B-M4-A3 and [Read More…]