AK Booster style cap for Acetech Brighter C Tracer Unit (Airsoft)

Made this cap for an Acetech Brighter C so I could use one on an AKS-74U without it looking weird. With a little finishing work the resulting 'tracer booster' should blend right in, pretty pleased with the results. I did put threads on the cap but they are so fine (0.6mm pitch) they just barely come through. I also uploaded a 'threadless' version with a base that's just slightly wider than needed so the part can be hand filed to a perfect fit if the threaded one doesn't work for you. Whichever you use, the metal threads on the Brighter C should bite into the part and keep it plenty secure. Please note that with FDM, support is needed for areas that 'touch' the build plate - there is a ~2mm recess in the under side that needs to be kept relatively flat. Also if printing the 'threaded' version please check for any drooping at the start of the threads - if the first layer is a little wide a bevel should be hand filed into the part so it will more easily thread into the tracer. This cap may fit other Acetech models, I only have the Brighter C on hand to test it with. If you need different dimensions for your application please feel free to comment them and I'll modify the file to match.