heres what i've been making for my p22

I came on here about a month ago while looking for a better mount than the bridge mount for the p22. no one makes anything. so I designed one for the 5" model to mount to the barrel shroud just ahead of the slide where the compensator weight or whatever its called is usually mounted.

I bought a caliper gauge to measure everything to the .0001", I drew the mount out on a free cad program on emachine website. I exported the image to a different website called shapeways( a 3d printer) and had them make me a plastic mock up of the design for $35. I got it today and put it on to see how it looks and works. so far so good. the plastic is too weak for actual use but it serves its purpose to test shell ejection problems which is my next step. hopefully they eject with being blocked by the weaver rail.

I went with the weaver instead of piccatinny because it was shorter in height and is easier to machine. That is the final stage to have this mount machined out of T6 aluminum. i could use steel but i dont think the extra weight and rigidity is needed for this .22 the walther top point II sight I am using is about 5 or 6 ounces and thats on the heavier end of laser optics, the $300+ optics are like 1-3 ounces.

attached is the images of the plastic one made by shapeways but their printing tolerances are +/- .003" so the hole for the barrel shroud is a bit to small and causes the bottom of the mount to appear flarred out when mounted, of course its not a problem to test function but its details that bother me. you can see this in the photos.

anyway i have the cad drawings saved as a pdf file if anyone wants them. you are free to modify or use them as is.

I will update this post after I test the shell casings ejection.

after that I will find a machinist to make the mount out of aluminum, I have started to price it out and its expensive to get it made, most of the cost is for the machinist to setup cnc equipment to cut the design out with a 3 or more axis mill. so far quotes have been around $275 which is about $200 more than i want to spend but I guess theres no way around it. at least it would be a solid mount, more stable than the bridge mount on the plastic frame of the gun.

A quick note about the design, the front part that grasps the barrel shroud was intentionally made shorter than the barrel nut. the barrel nut is thicker than the shroud and would require more machining if I made it long enough to cover it. I know it would look cooler if it covered it instead of the nut sticking out the front but it serves another purpose. when breaking the gun down for cleaning the shroud pulls off the barrel with the mount still attached and unmoved so if the shroud goes on exactly the way it came off there would be no rezeroing the sight. That compensator weight thing needs to be spun upward and back to expose the barrel nut on my gun.

I am having fun making this work hopefully it does and others might use it for their gun. BTW I couldnt find any other examples like it but if anyone else has please let me know before i spend the money to machine it.