When I think about it after seeing your mini I got an idea that might allow pretty quick burst disk change but still keep the small size.
I'll order some more brass pipes and see if I can mock something up.
I don't know if you saw my mini hybrid but I fired some .22lr bullets from a realistic barrel length at 5x and the projectile did penetrate quite deep into wood despite the low mix and short barrel.
A small hybrid at 20x should manage to provide the power of a .22 rifle.
If you rifle your barrel and add a sight you have a nice little plinker.
Good luck on all your future hybrids
