Just received two GSDesign magazine extension for my LAR 15 pistol magazines. A few pictures attached comparing the dimensions with a Magpul, an IMI and the 3D printed out GSD mags. Appear to be solid and with very good matting to the metal pistol mags that lends themselves to good transitioning during speed loading. I had ordered the flat bottom style and not the optional magazines for the Magpul bumper.
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