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Hmm I never knew short suppressed rifles(and their nomenclature) were such a delicate subject....:ORLY:

Also, don't buy another barrel to do it just get you current barrel shortened. Adding a big level of cost and complexity otherwise.

18 inches as an all rounder man. With a dpt on the end it will be the same length it is now but way quieter and less recoil. Will still get good velocity with factory ammo.