I have about 350 rounds through my STI Hex Tac, which is a Marauder clone but with hex slide cuts and an FDE cerakote finish. I have had several FTF's with several different mags. The trigger is also quite inconsistent, as sometimes it's smooth as glass and other times you really have to give a hard tug/pull. She's clean and oiled with the factory oil, so I'm calling STI tomorrow.