AS Designs ARC-Fire V2 — Ambi Kit | 0°/90°/180° Selector ThrowAS Designs ARC Fire V2 Ambi Kit 0 90 180 Selector Throw The ARC Fire V2 is a patent pending Active Reset Clutch (ARC) selector trigger system engineered to maximize your firearm's cyclic rate without modifying how it fires. One round per trigger function every time. Built from M2 tool steel with DLC coating, the same material class used in industrial cutting tools and dies. This is not a drop in trigger group it's a selector system that works with