so, took my brand new finished AK47 build out for its maiden run, first 30 rounds went beautiful, managed to put 26/30 center mass at 50 yards. loaded in the second magazine and a few round in, got a jam, nothing major, new gun, everythings kinda stiff, unbroken-in, to be expected. clear, rack, fire. few more rounds i get a loud audible "TINK!" noise, and no bang. uh oh, misfire. mandatory hold gun downrange for about three minutes........nothing. drop mag, pull to release the round, it wont move. cant clear the chamber, not good. so set the gun down for about fifteen minutes and waited, nothing, so cleared the other two people off the range and pull the reciever cover and spring. The hammer pivot pin is snapped, and the coil spring is unsprung. and theres a live round still in the gun, and the hammer has fallen, even if it has fallen off center. the hammer is wedged inside rom the snapped pin. i managed to pull the hammer out of the way with a large screwdriver, enough to pull the bolt out far enough to get the shell out of the rifle. definitely not how you want your gun to act. so now i can say ive gotten my first near catostrophic firearms failure out of the way, and handled it safely. i blame the cheap US made parts i purchased for the innards, but, that whole dang US compliancy thing made them necesary. i will however be replacing the hammer pivot pin with a good, much higher quality Russian replacement instead of the Tapco part that i knew i didnt trust from the very start. there will still be more than enough parts to keep it within the law, but im not going to waste time with using inferior parts in critical places. can definitely say it was unnerving knowing there was a live round in the chamber and that the hammer had fallen, luckily it canted enough to not strike the primer. its out, its cleared, and it'll be replaced tonight.