Magnum Research DE44SRMB: Type: Gas-operated rotating bolt semiautomatic - Caliber: .44 Magnum - Overall Length w/ 6 Barrel: 10.75 / 27.3 cm - Bore Diameter: .429 / 10.9 mm - Height: 6.25 / 15.9 cm - Slide Width: 1.25 / 32 mm - Construction: High quality stainless steel barrel frame and slide w/ full Weaver style accessory rail and Integral Muzzle Brake - Finish: Stainless Steel - Trigger: Single action approx. 4 lb. pull - Trigger Reach: 2.75 / 70 mm - Sight Radius: 8.5 / 215 mm - Sights: Combat type fixed - Polygonal Rifling w / Right Hand Twist 6 lands & grooves: 1 turn in 18 / 457 mm - Weight (Empty Magazine): 4 lbs. 8 oz. - Magazine Capacity: 8 rounds