Added the KNS anti-rotation device on both of my Geissele triggers as a cheap insurance policy against pins walking out during range drills. They do stick out a bit more than I expected and you do feel it when reaching for the mag release. Not a deal breaker but just thought I'd mention it. Also if you are looking to add an extended mag release it has to be one that angles down so it doesn't hit the KNS pins.
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July 16, 2016
John from FL United States
Impressed with quality of finish and provided tool.