All of our cartridges are assembled in SW Florida, USA!!!  The brass is processed from one of the BEST Brass Processors in the USA!!  Our remanufactured 5.56x45 NATO cartridges contains 55gr full metal jacketed projectiles also manufactured in the USA!! You won't be disappointed in the quality of 1st Round Ammunition for the price you pay! SPECS: Cartridge: 5.56x45 NATO Projo. Grain: 55gr FMJ FPS: Approx. 3100 FPS (Mixed Headstamps)