A fully 3D printable version of the AEP7 Laser Pistol from fallout 3 and New Vegas. It can be printed in around 30 hours and requires 1kg of material. It requires a lot of support and is challenging to print, but the pay-off is most certainly worth it.
All the files to build it can be found at my thingiverse page
It was painted using acrylic paint and weathered with a small paintbrush and black paint. The yellow tube is a piece of coax cable that I painted with yellow paint. All the decals are printed on ordinary paper, glued to the model, then weathered.
It has a working laser diode (else it wouldn't really be a laser pistol). It has a working trigger, functioning energy cells (in the form of 3 AA batteries) that can be reloaded and a potentiometer connected to the knob on the back.