Do you have an Uzi 9mm? Probably not, but if you do you probably also have a pair of beat up injection molded grips. Building on the work of some guy on Grabcad (who did everything in Sketchup and was working off a replica) I have here replacement uzi grips. They snap right in place and can be further held together with two 25mm m4 screws (advanced users can also try embedding threaded inserts in order to use the original screws but seriously, just use regular screws, m4s do the job fine). I recommend printing in nylon for the nice professional look and feel. In practice any non-pla plastic will do. The PETG grips on display here feel just as clunky as the abs originals. I also find grips made in tpu are pretty comfy. I recommend using at least 30% infill. If heat is a concern or you're selling you should go ahead and do the full 100% infill instead. Supports are needed everywhere, not just the build plate. Bridges should probably be supported. Some slicers will add way more support than is needed. I recommend playing with the angle and distance settings until you get something like in the screenshot above. Also included is an image marking all the things I changed from the original file. Not all of the discrepancies were fixed; sometimes I liked (or didn't want to put in the effort to change) them. Some filing to fit may be required but in practice was not for me. With a little brute force the grips fit snugly enough the screws didn't seem necessary.