5 lb connector and NY1 trigger spring in ALL of these. What I have noticed about these EIGHT guns (more so Using the 6 G30's of all 3 configurations, but nevertheless somewhat present in The 2 G21's) is the next - Obviously you can find the KKM 10mm conversion barrel https://jeffreytvtqm.mybuzzblog.com/12530025/the-ultimate-guide-to-how-do-i-buy-a-gock-30-gen-4-online