The file 'M249 Para Suppressor Adapter 3D Printer Model' is (stl,step) file type, size is 1.0MB.
This is an to fit a suppressor on an airsoft M249 Para. On the stock setup the gas key prevents a suppressor from being mounted, so I designed this small barrel extension.
Compatibility: tested to fit on my Classic Army M249, which should mean that it will fit the A&K M249 as well. Threading is 14mm CCW on both ends.
Printing instructions:
Print with the largest flat side down at 0.1mm resolution (same orientation as the picture).
Printing threads isn't easy, you need a well calibrated printer and good cooling (or print multiple adapters at the same time). If it doesn't fit you may need to scale the print up or down by 1% or so.
No supports needed
I printed this in PA6+CF filament and it seems fine, but your mileage may vary and you are using this at your own risk.
.stp file included
Barrel_extension.stl | 1.8MB | |
M249_stock_adapter_v18.step | 983.6KB |