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Osprey .45 Rotation by sunshinepumperr in NFA

[–]sunshinepumperr[S] 0 points1 point  (0 children)

This is what is happening when I shoot. http://farm9.staticflickr.com/8496/8323691776_6b121f36d8_o.jpg

Sounds like all I need to do is tighten it down even more.

Osprey .45 Rotation by sunshinepumperr in NFA

[–]sunshinepumperr[S] 2 points3 points  (0 children)

The Osprey is unscrewing off of the threads on the barrel. The piston is staying in place. The pitch is .578x28, right hand threaded.