Description American made and military grade are the hallmarks of Frontier Cartridge. This line of ammo gives shooters the best of both worlds. It is configured for a wide range of shooters and applications, from target/match shooting to varmint hunting. Frontier Cartridge features brass cartridge cases and military grade boxer primers and propellant.Caliber: 5.56x45mm NATORounds Per Box: 20Casing Material: BrassMuzzle Energy: 1323 ft lbsMuzzle Velocity: 2960 fpsGame Type: Small GameApplication: HuntingBoxes Per Case: 25Bullet Type: Hollow Point Boat Tail MatchBullet Weight: 68 gr 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.