I was stuck indoors with a cold earlier in the year and did a lot of 'kitchen table' stuff including a trial of a slingshot rifle below. In the absence of any recoil, I found that a stock or butt plate addition would have only been cosmetic. The main problem with this design was that the bands were not stretched enough to give good performance, although it was still hard to cock at that draw length. What it really needs is a cocking system/sliding trigger unit improvement.