M*CARBO Brotherhood

PC Carbine Upgrades from MCARBO

MCARBO Upgrades - …

I am looking to do the upgrade(s), but where is the spring upgrade? I have a shopping cart full and looking for the last piece which is the buffer spring. Any thoughts or clues where these are?



@SEH Welcome to the forum.
The M*CARBO PCC9 trigger and recoil springs have been discontinued.

It is recommended to add the accessories one at a time and testing with live rounds…verses all at once and trying to trouble shoot any issues.

Breaking in first, and knowing the Ruger is reliable is recommended.then add on.


yeah - literally waited for 8 weeks for the rifle, tomorrow is day one at range. so way too much time to youtube. I am thinking the 6 pins and extractor at a min, but need to do a couple breakin rounds. add to that I am PMAG’ing… should be fun.