.308 Winchester Rifles.308 Win (7.62×51 NATO) is the round that put the AR platform in big-game fields and designated-marksman roles. Our AR-10 RBR10 rifles and barreled uppers are DPMS-pattern compatible, run mid- or rifle-length gas, and pair a free-float rail with a medium-contour 16″, 18″, 20″, or 24″ barrel.Related CategoriesAR-10 RiflesBolt ActionHunting Rifles.308 AmmoEvery firearm on this page ships direct from our Stafford, Texas facility to the transferring FFL dealer of your choice. California, New York, New Jersey, and Massachusetts-compliant configurations available on request. NFA items (suppressors, SBRs) require Form 4 processing through your transferring dealer.