So I purchased a AK from another board member. Was told the rifle only had 30 rds through it and it looks like new. Took it out and shot it last weekend and it worked great for 35-40 rds. Then it don't go bang anymore. Pulled the top cover and the firing pin fell totally out of the rifle. Bagged up the gun and took it home. Took it apart and here's where it gets strange. The firing pin retaining pin was fully engaged and the firing pin would not go back into proper position. Took a pin removal tool and removed the retaining pin and the firing pin drops into place as it should. Reinstalled the retaining pin and all seems fine now. Question is how could this happen? I'd understand if the retaining pin was damaged or the firing pin was damaged but both look like new. Any ideas, in 45 years of shooting I never heard of something like this. I'd love to hear some ideas. thx Doc :doh: