Received rifle on Friday and took to the range today. Out of 60 rounds, maybe 6 failed to fire. It looks like the firing pin never made contact at all. I did not have another brand ammo to try, but the fact that I could not detect a strike on the primer leads me to be believe it is not the ammo. Anyone else run across this?
Did you lube it good? What brand of ammo? Some have super hard primers. Did you pull the trigger and hear/feel the hammer going forward?
Yeah, cleaned it and lubed well. It was Belom, 124gr. And I have not tried this brand in any other 9 yet. Yeah, the hammer fell and heard it. I suppose I will try some other ammo before contacting PSA. Is there a preferred ammo for the ARV?
Mine eats AAC all day long, which is the PSA sister brand. Im waiting on their 147gr to use with my can, should be super quiet. I bet that ammo you got just had super hard primers on some.
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Thank you sir… I have actually never had a failure to fire with any of my firearms so I was a bit taken back when it happened!
I should note, that I eventually put the ones that did not fire back into a mag and they fired the second time.
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Hard primers.
I just remembered something else… every one of these failures when I pulled the bolt back to eject the round, the extractor was not on the case. Had to pour the round out of the chamber. So maybe for these few failures the bolt did not close all the way? Even after lubing bolt movement was pretty gritty but now after a second clean/lube it is smooth. I also polished the feed ramp when I got home.
Problem solved. Swapped out the buffer spring with a Wolff XP and no more failures. Same ammo and CZ mag. Also put a nice polish on the feed ramp too. Shoots great now!
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which wolff spring did you get? is it specific to a 9mm or just ar style specific?
While th Wolff XP (standard AR carbine) initially provided better results, it ultimately was not the solution I was looking for. Here is where I ended up and happy with the way it runs now.
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If you changed your springs I would say it needs to be stonger. With no extraction problems then your firing pin spring is too light