Necessary for drop in triggers - Elftmann Tactical Anti-Rotational, Anti-Walk Pins

I have several drop in triggers. Nice because they are self contained however but because they are self contained trigger pins no longer have constant tension on them. I was at the range doing drills and my pin walked out on my rifle. System failure... We always speak of reliability in the gun world. As I improved the accuracy on my rifle without these pins I risk reliability. I will not compromise reliability for any reason. This 20 dollar mod ensures that. Just my two cents.