Reliable and light on recoil - CMMG, Inc 9mm Barrel and Bolt Carrier Group (BCG) Kit

I built the 8" kit into an Aero Precision Receiver/Handguard, Stealth Recoil Spring, and SB PDW brace. Out of 500 rds, we had one failure to eject, but the round sounded weak when fired, so we weren't surprised. No squip, fortunately. The recoil is light, even for my 78-year old mom who loves shooting it. It's cycled all kinds of brass and steel case, as well as hollow points. I highly recommend this system.