B Variant, "UBV" 1.5 Release

A follow up to the original release to upgrade some quality of life concerns on the blaster, which I'm calling the 1.5.

The goal remains the same, in creating a blaster that repurposes the Caliburn U hardware kit and turn it into a bolt action blaster without having to purchase other specialty parts, keeping the cost as low as possible and avoiding introducing additional parts to the eco system.

As of today, 7/23/23, you can find an updated stock, catch fork, sear pivot, plunger, buttplate, full compression K25 spring rest. You must reprint the plunger to make use of the new stock/catch/spring guide, but should be able to reuse your threaded rod. The buttplate will need (2) ea 1/4-20 x 1/2" screws. I hope these updated parts will resolve the catch issues folks have been having with their blaster, as well as make disassembly/maintenance much more pleasant.

***Important***
If you are CONVERTING an existing blaster, please use the +.200 PlungerStem part, if you used the +.200 Pl