This is a big one, designed to be printed on a large bed printer 300x300. Most parts will fit on a smaller printer but the handle won't. There are cut outs for LED lighting to the eye sockets and the barrel and a microswitch in the trigger. There is room in the handle for an 18650 rechargeable battery and holder as well as TP4056 battery charger modules. Magnets holes for the magazine. A 5mm diameter spring can be fitted to the bolt mechanism a couple of compression springs for the trigger. I would suggest using some 6mm rod or bolt for the pull lever on the bolt for added strength. And finally some leather or PVC Leather for the straps.
The author marked this model as their own original creation.