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Posted: 9/17/2023 1:17:05 AM EST
CMMG makes a p320 lower and sell a full 9mm ar that takes p320 mags.
They also make .40 cal uppers.
Im wondering if, since the the .40 cal mags are the samr size and fit in the same grip mod as the 9mm mags, if i could take a p320 lower and throw on a .40 cal upper, and have it work.

Anyone do this? Would this even work? Im never had or shot a AR in anything other than 556 and .22lr. So this could require completely different parts and im just an idiot.
PWS
Link Posted: 9/17/2023 11:58:19 AM EST
[Last Edit: IdahoPCCinc] [#1]
Originally Posted By Hydro_BxR:
CMMG makes a p320 lower and sell a full 9mm ar that takes p320 mags.
They also make .40 cal uppers.
Im wondering if, since the the .40 cal mags are the samr size and fit in the same grip mod as the 9mm mags, if i could take a p320 lower and throw on a .40 cal upper, and have it work.

Anyone do this? Would this even work? Im never had or shot a AR in anything other than 556 and .22lr. So this could require completely different parts and im just an idiot.
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What did CMMG say when you called them and asked if it will work ???

Since they manufacture all the components, it seems that would be the logical thing to do.



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