CMMG DEFCAN 45 GEN 2, Suppressor, 45ACP, Aluminum, Cerakote Finish, Black, Quick Detach, Includes 45ACP Tri Lug Adapter Muzzle Device 45CA453 The DEFCAN-45 is the .45 ACP PCC/PDW suppressor you've been waiting for. Made from precision machined stainless steel and aluminum, the DEFCAN-45 features a high-temperature Cerakote finish and is full-auto-use rated.