This kit is to replace the stock factory shroud and allows you to screw on an airgun suppressor with 1/2 x 20 threads. The shroud is 2 inch in diameter so best to use Ronin/Emperor/Fatboy with it.

https://youtu.be/08XDH4ID638

*DISCLAIMER: These products are INTENDED for the use on airguns only.  It is a violation of Federal law to use this product in a manner inconsistent for which it was intended for. It is your Responsibility to know the laws in your state, county and city and to fully comply with them.