When used on 7.62 gas guns like the HK MR-762, OSS cans are terrific. I have both an MR-762 and an OSS 762 Ti and they are a marriage made in heaven. Also, if you're a left handed shooter you don't get a gas blast in your face either. It's obvious that many of the people on this thread have no actual trigger time behind an OSS can. They are over priced however. Got mine on sale.