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BB retainer For KWA Midcap Mags

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  • BB RTNR MKII.stl

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Publication date 2023-03-27 at 14:22
Design number 1137015

3D printer file info

3D model description

Several years ago, a friend came to us with a six pack of brand new KWA airsoft mags and five of them had broken retaining pieces. See, the original pieces have a relief cut for the spring and that design makes them brittle in that area and prone to cracking and basically disintegrating. this design eliminates that issue altogether.

so, he asked if i could design and print new pieces for him, so i did and these are what we came up with! They work flawlessly, and are still working to this day, but if they needed to be replaced we could very easily do so. We hope these help you fix or upgrade your KWA mags.

We recommend you use PLA + as these parts will be under constant and varying pressure.

3D printing settings

Standard PLA settings
Print on its side
Supports enabled

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