I've got to show this off just a bit...
Some of you know that in my 'other life' I climb trees for fun:
I typically throw/shoot an 8 oz throwbag,
tied to a 1.75mm line over a limb, pull up my rope, and then I climb the rope. It kinda looks like this (BTW, that's the real Tangle overlooking everything and having a fit that I'm off the ground):
The question always asked and the problem is how do you get the rope into a tree so high?
Well you throw it or use a slingshot; here's my version of a slingshot and and the subject of this thread - the pistol grip, trigger release adaptor I made:
Here it is mounted on the slingshot:
Here it is ready to go:
And a close up of the adaptor:
And here it is in action on YOUTUBE - I didn't do a good job with the camera, but you can get the idea:
YouTube - A pistol grip and trigger release on a slingshot
and one other action shot - me doing a traverse:
I machined the housing, trigger, sear, grip and trigger guard out of UHMW poly and the release lever is AL.
It can be fired from the shoulder just like a rifle. Since I made the pics, I've added a collapsible stock and shortened the pole by a foot so it's a lot more managable.
It's been fired about 100 times and have had no problems with it. I designed a unique sear release and am very pleased with it's performance. The device has a huge advantage in accuracy, repeatibility, and ease of use compared to the standard slingshot configurations (hand pull and release).
Anyway thought it might be of enough interest to post.
Here's some machining pics:
This is the raw material on my small drilling/milling machine and rotary table:
and this is the finished product - the trigger: