I didn't like how much M4 mag adapters moved in my Jag Scattergun, so I designed this one to lock into the bottom of the receiver much more securely using 4 M3 screws. Requires 4 5.5mm square x 2.5mm M3 square nuts, 4 M3x10 flat head screws, and this M4 mag release and spring:

https://www.evike.com/products/54146/

7 walls and 30% infill should be enough. Feed port and mag well walls should be solid.

Airsoft Shotgun M4 Magazine Adapter

Jag Adapter.stl

Full set of extensions for KWA AEGs with PDW stocks (Ronin T6, QRF series, etc.) to increase the size of the battery compartment. Includes 15mm, 30mm, 45mm, 60mm, and 118mm extensions.

This is a very easy print. Just put the flat side against the bed, no supports, and layer height isn't too important.

KWA Battery Extension Set of Five Sizes

KWA Battery Extension - Medium.stl

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Airsoft Shotgun M4 Magazine Adapter

KWA Battery Extension Set of Five Sizes