Airgun Pellet Trap Plug 36mm

Sometimes the pellets would bounce of the bottom and pop out the top; this happens a lot when using bb's. Since I'm using this pellet trap for indoor (e.g. in-house) shooting, this is not ideal. The plug prevents this from happening.

The plug has a .5mm notch on two sides that can be trimmed down for perfect fit.
The NoNotch-file is without the notch, since I had to file the notch all the way down.