5.45 build using polymer parts, 100% light strikes, Could it be the polymer hammer?
Ok, so huge failure at the range.
NF polymer lower, and unknown polymer upper.
Its the standard hammer spring the lower comes with, but it hits HARD on my thumb, compared next to my other rifles lower, which has metal hammer, and hits my thumb softly....
I had switched the rifle lower out, with a Stag lower and DPMS metal parts kit, and it fired 29/30 rounds, 1 light fire....
I KNOW the spring in the NW polymer lower has a lot more force behind it, cocking it, and letting it go into my finger, compared to the Stag, but only the stag will trigger rounds????
Could this be the Metal hammer vs polymer? Would you replace the whole trigger system? Just the spring with a wolf?
I am thinking the polymer weakens the hit, even though the spring is stronger.....
Ideas? Was planned to be a light build for varmint hiking ;)
try a different firing pin if you are sure there is plenty of spring force. i have two 5.45 uppers on calvary lowers and very happy with them. i forget right now who's pin i'm using but thit is supposed to be special for the 5.45
Model 1 Sales.
Do not confuse it with the 7.62x39 firing pin, which is different.