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Posted: 5/6/2017 8:06:48 AM EDT
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Are the firing pins in 9mm AR bolts ( Colt style ) different from the standard 5.56/.223 firing pins ?
Thanks cvh |
Apparently there is a difference in 9mm firing pin also. The black one is a New Frontier that came in my NFA modular bolt. That radius kept causing the spring to spread and break coils off of it. I got through less than 20 rouND's and a coil broke off. In total, I shot less than 60 rounds before the second coil came off and the spring was too short to work. The silver pin is a CMMG 9mm pin I had for when the NFA pin broke, since everyone says it will break. I'm convinced the pin doesn't break but that spring getting damaged is what causes the failures.
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| How about the firing pin springs? I noticed that out of three bolts that I have...one of them is shorter and much, much weaker than the other two. Bought a CMMG bolt repair kit which has firing pin, firing pin spring, firing pin cottor key and an extractor. Put this longer, stronger firing pin spring in, not that I was having trouble with the orginial weaker spring, BUT.....thought it might be better overall. Your thoughts? |
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