Description PRODUCT DETAIL:Caliber :223 Remington/5.56 NATO Bullet Type :Full Metal Jacket (FMJ) Bullet Weight :55 GR Muzzle Energy :1283 ft lbs Muzzle Velocity :3241 fps Case Material: Steel Rounds-Case: 500 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.