The model is designed as a supressor dummy for DE's UTR45. The dummy is attached to the barrel by a 10cm outer barrel extension. The dummy also offers enough space to hide the XT301 Tracer from Xcortech.
It may be that the drill holes for the attachment of the front cap must be made slightly larger to fit M2 screws or you can also use the pin file and connect the cap with it.
If someone uses a tracer which is longer than the XT301, you can extend the body of the dummy with the help of the extension and thus create space.
Screws used:
4x M2 10mm