The Model 82 is where the Barrett legacy began.Engineered as the first shoulder fired semi-automatic 50 BMG rifle the Model 82A1 has been proven in combat in every environment from the snow covered mountains to the desolate deserts and everything in between. Its low felt recoil and reliable repower delivers on target with every pull of the trigger. More than just a rifle the Model 82 is an American icon.Features: Caliber: 416 BARRETT Operation: Recoil Operated Semi-Automatic Barrel Length: 29" (737 mm) Twist Rate: 1:12" (305 mm) Overall Length: 57" (1448 mm) Weight: 32.7 lbs (14.8 kg) Mag. Capacity: 10 Rounds Rail Length/MOA: 23" (584 mm) 27 MOA