So these are stacked and feed 20rds?
Blueline in GVRD has some of the metal couplers for sale pretty cheap right now.
You mean somethimg like these? these are the 3rd and 4th prototypes and NOT the final version. Pattent has been applied for and production will start soon, sorry can't share final version pics yet.
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Check heckler's. That is how his extensions attach, with a bolted on floor plate.
Here's mine...
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Thanks for pointing that out. I didn't see that as a possibility. I will try to play around and see how to get it to work.
Here's mine...
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Here's mine...
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