Evnin boys, I had a cz s/s kept jamming some how & ya couldn't open it, delt it in. I do have a 555 Stevens, bought it cause it fitt. Not much on single triggers but this ones mechanical, pull it once & no go bang, pull again it fires the other bbl. Bbls are selective also. Still prefer two triggers but I'll keep it. Unless I find another bereta s55 I think. Not much heavier that a crosmman BB. Easy carry, shot 1oz 7 1/2s in it. It fit to but a dam young kid starting out wanted it bad so ya!! Bill out. πŸΎπŸ‘£πŸ‡¨πŸ‡¦