M21 DMR BUSHMASTER/XTREME M21 DMR
.308 Winchester or .450 Bushmaster cal., 16 (Xtreme) or 20 in. heavy (Bushmaster) barrel, Bula muzzle brake, 5 (Bushmaster) or 20 (Xtreme) round box mag., fully adj. aperture rear sight, optional integrated modern optics scope rail w/no iro...