Can it be done? I assume this would fall under the "thread barrel extension" ($150) service, right?
Typically is there some type of notch cut into the extension so that it can be removed w/ a wrench for fieldstripping of the conversion unit?
Or does the extension's outside diameter match the original barrel profile throughout its length? (This would be a good candidate for permanent attachment, as that would not affect field-strippability
Will the extension fit snugly in the barrel bushing?
Could a thread protector still be had for a job like this?
TIA for y'alls help!