Designed specifically for 4.6x30mm and 5.7x28mm the DEFCAN-57 is the match made choice for those with a 4.6 BANSHEE or 5.7 DISSENT that want to complement the modern PDW. – Boasting greater sound reduction than the DEFCAN-22 for higher pressure .17-.22 cal centerfire cartridges the DEFCAN-57 features a QD ratchet attachment mount that’s compatible with the included ZEROED Flash Hider and MP7 profile muzzle devices. – To attach: Simply slide on give the locking collar a quick twist and tell your PDW to pipe down. – 5.7x28mm Full-Auto Rated – Includes ZEROED 5.7 Flash Hider (1/2-28 threaded) – Materials – Baffles: Stainless steel – Tube: Aluminum – QD Mount: Steel – Hub Compatible: No – Caliber 5.7x28mm – Muzzle Device ZEROED 5.7x28mm Flash Hider – Muzzle Thread 1/2 x 28 – Finish Cerakote – Weight 17.8 oz – Length 8.75