Specifically designed to reliably function semi-automatic rifles and pistols at subsonic velocities. Subsonic velocities offer low noise in both suppressed and non-suppressed firearms.FeaturesBlack Copper Plated Round Nose BulletHighly accurate. Plated for reduced fouling and enhanced functioningSure function in semi-automatic firearmsLow Muzzle FlashReduced muzzle flash for less shot signatureSubsonic velocitySubsonic from both rifles and pistols