Quick view Crosman Air Rifle DPMS SBR - 4.5mm BB The DPMS SBR Full Auto BB Rifle has the ability to put out over 1400 round per minute. It has a blowback action, 6 position butt stock, and AR compatible pistol grip. It also features a quad rail forearm for accessory mounting, flip up iron sights, an... MSRP: Was: Now: $199.99 Add to Cart Compare