This is the M21DMR designation of the Bula Defense M14 rifle that incorporates a rock solid picatinny rail on top of the receiver in addition to the traditional iron sights. The rail is hollowed out down its length making it see through in order to allow the use of the traditional open sights while also providing the ability to easily mount optics. Rails are precision aligned along the center-line of the barrel to provide exceptional accuracy when mounting optics. Features: Bula Defense forged M21DMR receiver with MIL-SPEC components gas operated, piston driven semi-automatic action traditional American walnut stock one (1) round box magazine two (2) standard sling swivels USGI style flash hider with bayonet lug and scope mount. Walnut hand guards are not compatible with national match barrels. Wooden hand guards are replaced with composite USGI-style hand guards for national match barrel upgrades. Caliber: .308 Winchester / 7.62 x 51 NATO Action: Gas operated, piston driven semi-automatic Sights: Integrated modern optics scope rail and original iron sights Stock: Walnut Finish: Manganese Phosphate Barrel Length: 22 modified USGI profile barrel Twist: 1-10 RH Grooves: 4 Overall Length: 44 Weight: 10 lbs Length of Pull: 13.2 Limited Lifetime Warranty