does anybody use a accu-wedge?

my upper/lower is a little loose…i wanted to know if that accu-wedge would fix the problem a bit…any feed back would be great …thank you

No, it doesn’t matter whether you use one or not.

https://www.m4carbine.net/gtsearch.php?cx=003496919632624929056%3Adhiwgm0hbaa&cof=FORID%3A10&ie=UTF-8&q=accuwedge&siteurl=www.m4carbine.net%2Fshowthread.php%3Ft%3D90567#1043