Worn firing pin springs are a common problem on the MG34 bolt. If you're not hitting your primers as hard as you need to, here's your solution. Our new MG34 firing pin spring are made to the original spec and will set off all but the most stubborn primers.
1 Review Hide Reviews Show Reviews
Before using the new springs the gun fired fin with PRVI ammo but would not function at all with 1950s vintage Yugo Ammo. The Yugo ammo displayed light primer hits and the primers themselves were set slightly deeper contributing to the problem. The stronger springs (FP and Main) definitely corrected the situation...... no misfires, good primer strikes and runs like a top.