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