Effective and affordable - Tacfire MAR108 AR15 ANTI-WALK PIN SET

Pretty sure this works on AR-10 as well but this was put on AR-15. They work but do not plan on removing them often. Had to swap an insert trigger assembly to another build and its Spike Industries trigger to the build these are on. One of the allen holes are stripping. I did not tighten down really as it was a build in progress and not near completion till recently. So maybe they can build them out of a stainless steel instead for a few dollars more. Lightweight is great unless it compromises the ability to remove and re-install for maintenance reasons.