Hopper fed speed loader for 223/556/300 blackout.
you'll need some inserts and screws and a spring to complete it all. You can also use a metal genuine mag catch if you prefer. ive made tons of these to hand out to local enthusiasts and they love love love them! You can find the info and whatnot on my printables page once youve downloaded and printed from here via the 3mf.
No supports needed.
https://www.printables.com/model/385416-hopper-fed-speed-loader-223556300
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