It should be interesting to see what works to fix the problem. I have a similar issue with an Interarms stainless TPH .22, but in my case about 30% of the time it fails to fire. Can happen with any round in the magazine, and does not seem more prone to be the first round. Have tried cleaning, different magazines, two brands of ammo (mini-mags and Remington high velocity). Firing pin seems fine, and the hammer spring seems very stiff. I'm going to give it another trip or 2 to the range before I give up and take it to a gunsmith.
Comments from Malysh are interesting, may be worth a try if I can find a suitable spring.
Comments from Malysh are interesting, may be worth a try if I can find a suitable spring.
