Ok, V1 of the nerf quad blaster starlord holster clips i was working on seem to be working & look somewhat correct (thank you shirra for the holster pad template to check alignment on!). not 100% movie accurate, but scaled to work w/ the nerf quad blaster & be close for the holster pad template shirra shared.
i would not recommend running with blasters clipped in or general rough handling of these (my first time designing a model to be 3d printed, i have some durability concerns where the fingers meet the base). you may want to light sand & cover the clip fingers with something to minimize it scratching your blasters paintjob (granted, where it would scratch isn't easily noticeable, but you'll know its scratched).
Right:
https://www.dropbox.com/s/0foy5iyyinzu5f8/StarLordHolsterV1-Right.stl?dl=0
Left:
https://www.dropbox.com/s/mqrunmsz176w3am/StarLordHolsterV1-Left.stl?dl=0 (i have not printed this yet, just mirrored the Right file, but it should be fine)
sketchup file:
https://www.dropbox.com/s/3iwkwcfe6p10s15/StarLordHolsterV1-Right.skp?dl=0 (once you're done editing it, you can just mirror it to make the left holster clip)