Disclaimer: Make sure the firearm is unloaded before attaching the adapter.
Disclaimer2: The adapter is only for cleaning purposes.
Neat adapter that makes any soda-bottle a waste-collector for rifle-cleaning debris. I find it very handy to just push cleaning patches through and they end up in the bottle in stead of on the floor. Oil debris from the brush also ends up in the bottle.
Print with PETG for better durability. As I have seen it holds up pretty good to cleaning chemicals - but its plastic. Maybe ABS holds up better? Let me know in the comments if you try some other material :)
Fits rifles with 14x1 threads.