where does the potion of the carbine tube with the detent recesses fit?
Edit: nevermind, I figured it out. Thx
I honestly don't know how it works... never owned one, I just heard about them on AR15.com when someone was wanting to run an A2 stock on their bushmaster carbine from a while ago. I'm guessing since the detent is in the lower itself you just use it... but who knows anymore.
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