FN 5.7X28 GUNR 40GR FMJ 500RD CASEFN 5. 7x28mm GUNR 40gr FMJ offers reliable performance for target shooting and training. These rounds feature a 40 grain full metal jacket bullet, providing excellent accuracy and consistent ballistics. Designed for use in FN Five seveN pistols and compatible carbines, these cartridges deliver dependable function and minimal barrel fouling. The GUNR (General Use Non Restricted) designation makes this ammunition suitable for a wide range of shooting