Custom made by RAP4 in the US, this is one of their base frames with the addition of original Czech AKS-74U parts, these guns were parted out after the cold war and the pieces were bought by RAP4 for a limited run of specially made markers. I love this marker and have fought selling it for a while but I just don't play anymore, so I hope it can go to a good home. During my last clean on it, I misplaced the ball detent screw on the side, otherwise it runs without any issue whatsoever. The screw is about $5 from RAP4, I just haven't been bothered to get it as I haven't been playing. It comes with a case, muzzle guard, 3 magazines, and a magazine holster for a vest. This thing is gorgeous, authentic, fun, and very loud.