AR-15 magazine extension M3
thingiverse
This one will fit M3 magazines. It's yet to be tested on the range, so it's still a work in progress. Use an M4 screw to secure the plate. Enjoy Update! The extender was tested on the range and weaknesses were discovered. New reinforced version is uploaded. Please note that the bottom "follower" is not to be used in the extender, insert the spring directly. The new version is still to be tested on the range for confirmation. Update! The extender has been tested and a final version is releasen. The conclusion is that it will hold +6 rounds for the 40 round magazines. It will not withstand multiple dropps with a loaded magazine, so be carefull with it. Remember, it's just plastic.
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