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9mm AR Build

cbxjeffcbxjeff Member Posts: 17,558 ✭✭✭✭
edited October 2009 in Ask the Experts
I have a dedicated 9mm upper that I want to install on a std. AR lower. I am told that I need a mil spec buffer tube, 9mm buffer, & 9mm buffer spring. I'm haveing a little truble finding the parts. Mil spec tubes seem to be much more scarce that commercial ones. Can someone suggest a vendor? Have I missed any required parts on this build?

Thanks guys,
It's too late for me, save yourself.
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Comments

  • BHAVINBHAVIN Member Posts: 3,490 ✭✭
    edited November -1
    www.brownells.com

    They should have all the parts in stock.
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  • NwcidNwcid Member Posts: 10,674 ✭
    edited November -1
    You just need a heavier buffer. You dont need a different tube or spring. Just make sure the spring you have is the right length for the tube you are using.

    The recoil on the 9mm is a lot different. Since it is a blow back it needs more weight.

    Now if I could just remember how heavy...........


    Some of the builds require a different hammer. I believe the difference is the width of the hammer. I have an OA and they were made to run with standard hammers. You can still run your .223 with the 9mm hammer.
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