came across this on a T05 tune web page. made me think twice on a B28 a while ago.
"However on BAM B-28 the Chinese 350 clone, these sears and sear number one are not heat treated, and can be bend with pliers with force. Which is a major safety risk, in a cocked magnum springer like thus the main spring force pushing against the piston is said to be 300 pounds so by using not heated steel BAM endangers the owners of these guns. "
In the meantime.....I'm cleaning my gun.