I have a rail on my WASR. When I first bought it, it fit real good, nice and snug. Now after many rounds fired, it has worked loose in an up and down manner. Still in the handguard retainer like it needs to be but I can pull down and up on my vertical foregrip and the front will move up and down inside the handguard retainer.
Are there some shims or something that can buy to fix this issue?