Description
The sear trip in your FRT must protrude .205 above the receiver for this modification to work. That is the height of an M16 auto sear and that is the standard we are using.
Alteration of your bolt to work with Full Auto lowers, Super safety and some Forced Reset Type triggers. Some FRTs have sear trips that are too low. You are purchasing the service to work on your bolt. You are not purchasing a bolt.
****We only modify the latest version of the AR57 bolts. The original recalled bolts, we do not work on****
Take notice that sometimes porosity in the weld behind the sear trip is exposed after final fitting. It’s not pretty but is 100% insignificant. We guaranty the integrity of the weld and milled sear trip to be functional for the life of the bolt.
