Introducing the Fiocchi Hyperformance Defense 4.6x30mm HK Ammo 38 Grain Polymer Tip. This precision-tuned ammunition designed and formulated for use in short barrels. Whether you are the owner of a short-barreled rifle, patrol carbine, or arm-brace pistol, each projectile used is specifically selected to deliver the highest ballistic and terminal performance from powders tested and selected to deliver 100% burn, low muzzle flash, diminished report, and high velocity. Safe for use with suppressors and optimized for barrels ranging from 11.5" to 7.5" in length. FeaturesOptimized for short-barrel riflesConsistent terminal performance across calibersPurpose-built defensive projectileHigh-velocity, flat-shooting performanceOptimized reliability in moder platforms