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Brian Enos's Forums... Maku mozo!

Who makes the best GPU drop-in parts?


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Hey folks,

I have a buddy who is contempleting installing a GPU (Gas Piston Upper) drop-in to his AR rifle.

I am not sure if it is a full length AR rifle, or if it is a carbine or mid length rifle.

I guess I just wanted to pick your brains for good manufacturers, and we can go from there.


In Christ: Raymond

Edited by RaymondMillbrae
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