Adventure Force Conquest Pro Spring Spacer (Small)

thingiverse

04/18/22 EDIT: There are now three designs available. 20 mm, 15 mm, and 10 mm. 20 mm is the original design which should give you about 20 fps. I haven't tested the other two yet but they should give you less of a bump in proportion to their size. I designed this because I was not happy with the other spacer designs out there. One design had the spacer on the plunger head, which increases the plunger's weight and reduces your performance gain. The other type (which I have available in a separate listing here) results in a big bump in performance but was too stiff of a prime. My design fits in the back of the spring rest and gives a nice boost in performance while still having a reasonable prime. It takes advantage of the fact that there is actually a bit of slop in the system when the priming handle is all the way forward, so filling this up helps get more performance without having a significant impact on the priming force required. If the spacer is a little loose in your blaster, a bit of felt tape around the outside can help tighten the fit.