A russian capture mauser will have an "x" on the reciever. I have a couple pics, but its really hard to see the x in the pics. As to how they shoot, mine shot amazing, but i did overpay. As long as you check out the bore, muzzle and crown of the rifle, it will shoot well for you. also, +1 on the finnish or swedish mauser. There amazing rifle built with the best materials of the time. Heck, these things are pretty close to being on par with todays rifles. maybe even better than some.