OK here is an odd question, perhaps. Smith and Wesson 422 .22lr. autopistol. I notice that the barrel is retained(?) with spanner nut just as on the old M61 Escort. I once took the nut off the barrel of an Escort and as I recall, I was able to remove the barrel without hassle. The 422 has some similarity to the old 61 Escort, which I determined to be sort of a dud gun. Before I waste time risking buggering up the nut working with a small spanner wrench to remove it, is it possible to remove the barrel that way, or is the barrel a snug fit, or not removable in the field, or does it require full disassembly of the gun to gain clearance, or other reasons not to try bothering with it? Thanks.