Works on bca's 9mm blowback w/ buffer pcc - PW9 AR Pistol Caliber Firing Pin And Spring

All I really needed out of this was the spring. The one I got stock from BCA was so weak that after a year or so, it started causing slam fires. I'd pull the trigger and in less than a second, my entire 20+ round mag was gone. Terrifying. I reached out to BCA but didn't get any help so I tried this and it fixed it.