Buy your Magnum Research BFR Revolvers from BattleHawk Armory! MRI's Big Frame Revolver is truly the biggest, finest revolver on the market today. Entirely manufactured in the US and like the legendary Desert Eagle pistol it is designed as a magnum from the ground up. The BFR is all stainless and has a cut rifled barrel that delivers unmatched accuracy with lead or jacketed bullets. The BFR is the most powerful production single action gun made and with 12 calibers and two frame sizes to choose from you can take everything from grouse to grizzly. Choose your chambering and frame size and have your favorite gun dealer locate one of the BFR revolvers for you. Caliber: .45 Long Colt/.410 Barrel: 7.5 Twist Rate: 20 Groove Diameter: 0.451 OA Length: 15 Weight: 4.5 lbs Height: 6 Slide Width: 1.75 Trigger Pull: 3-4 lbs Finish: Brushed Stainless Steel Construction Sights: Factory Black Fixed Front / Rear Adjustable Shots: 6