For sale: MFI copy of KAC silencer. Non-functioning and NFA legal. Comes with a long and short adapter. Adapters are marked from use but are totally hidden by "can" when mounted. Adapters screw onto muzzle threads and "can" attaches to adapter with set-screws. No set-screws touch barrel. Made to fit over HBAR and M4 barrels. MFI sells adapters for post-ban use. On post ban barrels, set-screws clamp to barrel. $89 plus shipping. M.O. or paypal (3%).