These cosplay props depict Sabine Renn's customised Westar-35 blaster pistols. Both have spring-loaded triggers to give them a little more feedback, and you'll need to source two 14mm (ID) x 20mm (length) springs . Everything else you'll need to produce them is included in the zip file.
If you don't have a 3D printer but you'd really like a set of these please send me a DM and we can arrange for me to produce one for you, or check out my Numonday store:
Or on my eBay page: 'enterprisexddesign2016' (formal shop to come)