BSA Standard repairer needed

[DEAN C.]

It already has gone elsewhere, It is not a straight line crack.
It has cracked in a T shape when I have just looked again. It comes from between the trigger guard screws and splits out both ways for about 6 or 8mm

It has been used with the trigger block properly tightened, and the stress cocking it with the trigger block into the cylinder loose has eventually broken the cylinder

It was like this when I bought it and I didnt notice it. I felt it was a bit loose and presumed the stock bolt needed tightening up so I didnt worry much about it.