I bought one these same setups, and mine is tac welded as well so fa I've only shot the wolf HP through it and it jammed with a tapco mag not the bulgy mag. I cycled the rifle with the wolf ammo in and I could see the round getting caught just bellow the bullet guide causing my ftf. I've converted my own saiga 12 and built a FAL from scratch with a parts kit. How hard is it to install a new bullet guide if I have to?