Handgun barrel length part II

[esshup]

If a handgun has a threaded muzzle brake on it, is it considered to be part of the barrel and is to be taken into consideration when calculating barrel length? This brake would not be permanently affixed according to BATF rules and regulations.

[morrison]

The muzzle break, from the research I was able to conduct, is only included in the barrel length if it is permanently affixed.