| I bought this to mount on a Polish Underfolder AKMS (7.62x39) rifle. Took it to the range today and within twenty shots it broke. The recoil caused something inside to break open, leaking a slimy goop all over inside the optic tube. The brightness dial became loose and floppy, leaking goop out the crack, and it stopped turning on at all. What a piece of junk! I will never buy Barska again, and I strongly suggest you don't either. I've got a BSA red dot that cost less than half of this and it works like a champ. Garbage construction! |