I made one for my beretta out of wood. (birch) You need nice a nice straight grain piece to start . I wanted to experiment some using a raised rib. I was able to tune it for POI by hand planeing. Painted it satin black & put beads on it.I made notches 1/16 deep x 7/8 wide in the top of the rib so I could attach it by wrapping electrical under the vent rib & over the top. You can't see the tape looking down barrel.
I still plan to adjust the total height down about 1/8 so I have not looked at other ways to mount it. Works just fine if you want to try shooting more "heads up" Brent
A gentleman I know makes them already out of Delryn, which is a dense and very durable plastic. I have 2 of them on my guns and love them. His name is Lonnie Hales. work 7048927545. U will like them. U will like the price 2.
Tape is the way to go I used to use silicone but tape is easier and holds just as well .I can pick up the whole gun by the rib. Also the tape is instant put it on and go shoot no curing time like silicone and easier to remove without any clean up. I just glue a light bead like a tru glow or Hi Viz right to the top of the rib or cut a groove and lay the light rod in the groove like a Keen rib.