Description PRODUCT DETAIL:Manufacturer: Aguila Caliber: 5.56mm Grain: 62 gr Bullet Type: FMJBT Energy at Muzzle: 1366 ft-lbs Velocity: 3150 fps Rounds: 50 Firearms, trailers, and some accessories are only available for purchase in stores. Each location follows all BATF and individual state/county/city laws to insure the desired product is legal for sale. Any info provided online is subject to change, please go to your local store for more accurate information.