Bug-A-Salt Picatinny Barrel Adapter

I printed this out of Polymaker Tough PC as I ran out of PLA and it was all I had. Printed rail down with a brim but you may not need it. No supports needed. Print with enough walls for strength, I used 4 and 50% infill. I included STEP file if you need to adjust the inner diameter for a better fit as PC may have shrunk.