MI M4 16 IN. BASIC RIFLE
5.56 NATO cal., GIO, carbine length gas system, 16 in. M4 barrel, A2 flash hider, A2 front sight gas block, forged aluminum receivers (flat-top upper), Mil-Spec M4 buttstock, A2 grip, Mil-Spec M4 style heat shield handguard, charging handl...