Calico Jack M4 Airsoft Stock Mount

I made this to replace the tank stock, on my Calico Jack with a standard M4 stock I had on-hand.

The contact between the frame and the connector fits well and it is held in place by rigid internal extrusions. Note that the standard tabs that mount on the outside are not part of this design because they simply break off too easily. I'm not sure if buffer tubes have a standard inside diameter, but this part is designed to fit a 21.5 mm ID.

I'm printing 3 mm layers, 90% infill and of course I'm using supports.

The print was hassle free using black PLA.

I'm curious if anyone is using my part, so let me know if you find it useful.

Thanks!