Magnum Research DEXIX6BB: Type: Gas-operated rotating bolt semiautomatic - Caliber: .50 A.E. .44 Magnum .357 Magnum - Barrel Length w/ 6 Barrel: 6 / 152 mm - Height: 6.25 / 15.9 cm - Slide Width: 1.25 / 32 mm - Construction: High quality carbon steel barrel frame and slide w/ full Weaver style accessory rail - Finish: Burnt Bronze and various custom finishes - Trigger: Single action approx. 4 lb. pull - Trigger Reach: 2.75 / 70 mm - Sight Radius: 8.5 / 215 mm - Sights: Combat type fixed