Perfect for your AR builds.
This plug kit is PERFECT!  I used to it plug up the controls for my AR-9 build, and couldn't be happier with how these plugs fit into all of the fire controls, takes downs and spring/detent pockets in the stripped lower.  In prep for paint I plugged up all the holes in my receiver and let it hang over night, happy to say not a single plug fell out!  Wont' hesitate to order more and tell my other build friends, Thanks guys!
Rating: 5 stars