Ốp Giảm Thanh Kiểu EX BCAR 18

I took Epicxxxx's bearing centering and rifling mod for standard 16mm barrels and doubled up the amount of bearings then created a suppressor appearance cover to fit around it. I included 3 variations of crush with 8 degree spin. From what I have been able to find this is a good angle for 100-200fps. I printed 3 walls and 10% infill. The bottom cover needs minimal support on the oring mating surface. I use PrusaSlicer's smart fill support to avoid too much support fouling the threads.

Hardware

18x F683ZZ flanged bearings. 

18x m3x10 button head screws