This is a set of models that will let you 3D print a Laspistol based on those found in the Warhammer 40,000 -verse.As for pattern, this one was heavily influenced by the Kantrael MG 'Defender' as well as an Accatran MkII, with some elements of others.
Using the current measurements, the prop will come out to about 16x8x3 inches.
With some magnets (link below) you can make the magazine detachable, as well as tune the power dial.https://www.amazon.com/dp/B07G8S98G7?psc=1&ref=ppx_yo2ov_dt_b_product_details.
If you have an questions or issues with the print, let me know. I also take commissions for custom items. You can email me at minatek616@gmail.com