Maxim-um quality - Maxim Defense Industries Universal 9mm Bolt Carrier Group (BCG) w/Weight Plug

I've had so so luck with other 9mm BCG's so was leery with this purchase, especially since it said it was a factory "demo". Well, I couldn't find any tool marks or usage/handling marks of any kind. Installed in my upper with a Wyndom Weaponry multi cal lower. Using Mean Arms Endomag conversions on both Gen 2 and Gen 3 30 round Pmags. Call me impressed!! Runs like a million, no ftl, no ftf and no fte in over 100 rounds with Win FMJ 115 gr.