Summary

This is a SFW (Safe For Work) variant of my not so SFW plug (https://www.thingiverse.com/thing:2663548)

this also incorporates a text varning =P

print it with the text side down if you have good surface quality on the bottom side of your prints, otherwise print it with supports for the text with the "non-mirrored" text up.

Use supports for the main body since its tapered to fit the .223 cartridge-seat

The author is https://www.thingiverse.com/trixigt/designs 

Source : https://www.thingiverse.com/thing:2667165