I've been wanting to design this for ages and finally I have the skill level to do so, it only took about 6 hrs of CAD and 8 hrs of printing, it's one of the coolest 3D printed conversion kits and the fastest to print ;)
BOM:
M3 x 40mm L + Nut x 3 (P-rail Clamp)
M3 x 30mm L Countersunk (Lock)
M4 x 30mm L x2 (L&R)
M4 x 40mm L + Lock Hex Nut (Hinge)
Aluminum Extrusion 20x20 x 160mm L
If you are interested in other prop firearms, Airsoft parts and designs do join our group on Matrix:
https://app.element.io/?pk_vid=f12152aac29bbc4a166549437941781a#/room/#GCI-General:matrix.org
!!!Note: I'm always open for suggestion and help on improving the design and proof of concept.