home › Forums – The GUN Forum › Firearms › Rifles › AR15 › 40 build?
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Thinking about building a 40s&w upper to run my plethora of Glock mags in this cal. Any suggestions for barrel and bcg? Also, what would the best mag well sleeve be?
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BigRedWalters
GuestJune 15, 2021 at 3:14 amSAT word. Nice
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noopenusernames
GuestJune 15, 2021 at 3:14 amCan’t say I’ve ever heard of an AR-40. Wouldn’t know who even makes a barrel for that. Good luck. If you want to use Glock mags, why not just build or by an AR-9 that’s Glock compatible? A lot of them are.
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