

The trigger was cut from 2 pieces of .210" polycarb that were fused together, and simply provides a slope for the spring and the catch-cap to slide over.

Obviously this is WIP, but it does catch and fires about as hard as a +bow. I plan to do a bullpup version, and work on miniaturizing this design. As it is, I had some fun tying the string to my shoulder and using it one-handed, but this is really too powerful to be appropriate for one-handed use. The spring is 1 foot of K14, and it has 5.5" of draw with about 2" precompression. The "catch spring" (shown here as a wooden block and a bunch of rubber bands) needs to be pretty strong, but it's not difficult to prime or to fire. Also, I think the lever-trigger piece could be made with much weaker materials than polycarb--Even wood. The allowed size (It could be much thicker than even my trigger, which was .420") should make wear a non-issue, and it definitely gives lots of room for error.