Low Recoil with Powerful Performance Developed for the HK PDW, the HK 4.6x30mm cartridge offers a low-recoil option for self-defense or competition, with impressive performance. With a muzzle velocity of 1900 fps with a 40 grain, full metal jacket projectile, the HK 4.6x30 produces good penetration and is suitable for varmint hunting as well. The smaller diameter cartridge allows for more ammunition to be loaded into magazines, which is ideal for self-defense use. The HK 4.6x30 is a formidable cartridge for a wide range of applications. Fiocchi Range Dynamics HK 4.6x30 40 Grain FMJ Specifications and Features: Item Number: 46EXA Caliber: HK 4.6x30 Bullet Type: Full Metal Jacket Bullet Weight: 40 Grain Muzzle Velocity: 1900 fps Use: Target/Training 50 Rounds