Nerf Longshot Full-Length Pusher Breech

wanted to try making a full length pusher breech for a longshot in case anybody wanted one/ didn't want to cut brass for a sleeper breech. The bolt is a lipless style that takes 7/16x5/16x/16 o-rings for the pusher and 1-1/8x15/16x3/32 o-rings for the back. uses 17/32 brass for the barrel. Push it all the way into the breech piece until it stops. I'll probably rework the breech to take 9/16 brass that telescopes into 17/32