Heckler and Koch MP5SDA3 with Factory KAC SD can in 9mm. This is the fullsize MP5 that has the removable, built in suppressor. this gun contains the impossible to find Knight's Armament Suppressor! yes ,you read it right. This gun has a brand new, never fired KAC can in stalled on it. RDTS did 110% of the work on this weapon. Plastic SEF pack, paddle mag, correctly remarked, and with full stock, very comfortable to shoot! Registered sear gun, so you can move the sear around to one of your other fine HK hosts! Also registered as a SBR. This is a 3 tax gun!