have a psa upper 9mm, with a fm9 9mm bolt and a psa glock lower. gun runs great but im getting my bolt dented by hammer….any solutions to this? anyone else have this problem?
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You may need to replace the hammer with a 9mm cut one. That doesnt look like a ramped bolt.
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the fm9 bolt is ramped. But I agree I’ll change out the hammer, and polish up the nicks….heres a pic from online of a fm9 bolt ramp.
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and yours using that hammer has given you no issues? i have a similar hammer. the one in the lower now is not like that, I will swap it out and see what happens.
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No issues so far and same hammer in another lower same model.
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mine has a angle in the top similar to this picture. But I have a round one like yours I’m going to swap them…
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Just posting encase someone else has this issue.
What hammer do I need for my 9mm AR? (hammer/bolt compatibility) – Blowback9.com
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Yeah I watch him all the time he’s pretty good.
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i use the gen4 psa bcg so at first i had no comment, but on the exomag build which is just a standard ar15 lower i coincidentally dropped in an ar9 trigger as well from a stock glock lower either from psa or bca.. also thinking about it have used the stock trigger that comes with bca lowers with no problem as well..
but when i swap them out i specifically recommend the cmc 9mm trigger, very crisp
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i’ve never seen the hammer beat up a PSA bolt in my ar9’s. my ar9’s though use the toolcraft manufactured ramped bolts that psa sells and the psa hammer / fcg kit that comes in the ar 9 build kit. i think you may be on the right track swapping it all out to the correct hammer like what coolwin has ..
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