Probably not many documented. But that has more to do with them being relatively new and not being shot that much by the type of buyers who own them. However, other long term tests have shown the RAS to have soft metallurgy and deformation, and other potential long term issues. Maybe not immediately, but sooner than later something will go wrong much quicker on these than say, a WASR (which Battlefield Las Vegas tested out to 100,000 rounds fired, btw)Three out of how many?