How is the breech seal?
A friend of mine from works brings me this gun and asks if i can service it. Found a finish nail in it. Everything looks ok but Im not sure how to remove the piston seal. There isnt a screw holding it, but a plate with a hole in the center. Dows this entire end plate screw off to remove the old seal!? The seal does have a few tears in it that are probably the result of the nail. I found replacement seal but wanted to check on this first before i go any further. Thanks for any advise and direction.