my mak-90 just got cleaned and a good wipe down with g-96 and is sitting on the couch time now. I love it, have had zero problems out of it approx. 1000rds of various surlpus ammo, with wolf 154gr sp it will knock the x-ring out at 100 meters, I know i know i couldn't believe it either, that is why i kept firing 5 to ten rd groups to make sure it wasn't luck.