Bowstop specifically for the Slinghammer. I designed this because I wanted a perfect fit, which you wont get by using an old bicycle tire. This will fit most 80 / 90 lbs bow arms, but it was optimized for the common EK Archery 80 lbs Cobra limb. If you have a different limb and the dimensions are within 18mm x 5mm, this will fit. 

Tested with TPU for AMS, but any hard TPU would be a good choice. PETG would probably also work but I havent tested that.