Quote Originally Posted by Shed tuner View Post
Diana 28mm seal works with a turned down M8 allen headed countersunk bolt threaded though, and instead of a nut, use an internally threaded small steel top hat (front spring guide) with a small lateral hole through it. The small hole is used to hold it (just stick a suitable sized punch into it though the piston slot) when tightening up the countersunk bolt that retains the seal. add a few mm of stroke too, so I added a spacer back in to get it to stock stroke, or it interferes with the trigger (main long sear)...
This sounds ideal.someone should make them up.