Angry Bird Sling Shot

Only the back of the handle requires some support. I was able to print it without a support at .2, but it had some rough texture in the back of the handle that needed sanding.

When printing the sides, just print the second one in mirror image so you have a left and right.

The bolt and nut were printed at .1 with 50% infill.
But the bolt and nut are tight and will most likely just turn enough to tighten the side to the handle. You can use a regular nut and bolt to fasten the sides to the handle if you have problems with the printed ones and probably better off if you have a strong child.