Sorry for the necro post, probably beats starting a new one! But man, got one last week second hand, a 14" police, same as OP's, upgraded with the TSC breech bolt, and managed to find a set of TSC steel hammer / sear etc, only to find out that the entire magazine mechanism from a real steel would fit, so ofcourse I'd be ditching TSC's effort to go for a set of rs, around £100 off midway, after half a day of racking it, the slide block broke, and without any replacement on the market, I drew it up on CAD that day and sent it off to be CNC'd the next, that's how much I love this gun, by far my f