CMC Anti-Walk Pin Set

If you've put a lot of rounds through your rifle chances are the trigger and hammer pin holes in your lower receiver have started to wear a bit. When this happens, your pins start to "walk", meaning that they work their way out of position resulting in catastrophic failure. When this occurs, your lower will lock-up and you will not be able to fire another round under the pins are reset. This is a task that is not easy to do in the field, at least not without the proper tools. 

CMC anti walk pins are the solution to this problem. Two set screws on either side of each pin hold the trigger and hammer pins into place to prevent them from walking out and causing your rifle to fail.