Thread: Muzzle device counts as part of minimum length?

Yes, a semi-permanent muzzle attachment is counted as part of the overall length. Semi-permanent means mechanically attached and requires some effort or tools to remove. A simple threaded muzzle can may not (in the eyes of a Judge) qualify if it can be simply unscrewed by hand. If you were charged with having a pistol with the can removed, but it was attached when you were arrested, then you would have a fairly good defence.