Threading a pistol barrel internally

[RelliK]

It's possible thread a pistol barrel internally and adopt an adapter for fix the silencer in?
It's a good idea because with an external threaded barrel the pistol doesn't fit the standard holster no?

[Mark Sman]

Possible, not advisable.

First off there is the whole get 'poundmeintheassfederalprison' aspect of violating the NFA.

Second you would have to machine threads into the barrel, leaving space for the initial sleave of the silencer to clear the lands and grooves. This will leave either the barel or the sleave very thin. Remember this is going to have to withstand thousands of pounds of pressure.

Third, internally threading is going to mean a 'creative' way of recrowning the barrel, without screwing up the lands/grooves or the new threading.

Tricky.

[HoboWithAK]

Capturing Bigfoot is possible, also. This is just not a good idea at all. I'm sure you could find somebody to do the suppressor for you, but lathing the barrel on the inside for it will be very complicated. You will need a thick barrel to start with. You will then need to lathe the threads into a recessed part of the barrel, so they won't touch the bullet as it exits. Then you will need to get the suppressor to screw in to the threads. You would have to make sure the inner sleeve of the suppressor lays flush with the barrel. Too little and it will be inaccurate and ineffective. Too much and it will cause a stopage, and your pistol will explode in your face. Then you have the whole problem with a thin barrel becoming even thinner. I wouldn't even try it. But a threaded barrel, and a new holster to accomidate it. You will save yourself ten thousand headaches.

[Swedish Chef]

Never heard about threading a pistol like that. It might be used in Hollywood movies, but they use blanks and fake suppressors so it's not the same I guess.

Some pistols like the HK P9S has an unusually thick bbl which you can turn down and thread, and then screw an adapter on to the threads, on to which you then attach the suppressor. That's one way of not having to use an extended bbl and risk damaging the threads.

[Echo7]

Ok, who here has a suppressed / silenced pistol?

[Doomsayer]

you also have to make sure the thread is 100% straight (I don't even want to think about what happends if it's not straight) ... but tapping a 100% straight thread is impossible to do by hand ;)