Single-stage, non-adjustable, drop-in trigger; Boasts a solid 3.5-pound pull weight; Hardcoat Anodized Aluminum Housing complete with rubber urethane feet; A2 Steel Trigger; Trigger, Disconnect, and Hammer are all Nitride Heat-Treated to 70 Rockwell case hardness; Includes custom-fit stainless steel KNS Precision Anti-walk Pins; Will not work with DPMS 308 lowers unless they use MIL-spec parts; Red/Black Color