The trigger is designed to fit all AR-15 platforms with a full-auto bolt carrier group (not to be used in ARs using .300BLK or .308).The WOT is easily installed without the help of a professional gunsmith (although, we always recommend a gunsmith to inspect your firearm). Shooters can now experience the thrill of shooting a hard-reset trigger in their AR-15.*First, make sure your firearm is unloaded and clear. Move the magazine and ammunition away from your working area.To Install:1.) Remove the upper receiver from the lower receiver.2.) Gently allow the hammer to go forward after depressing the trigger.3.) Remove the grip from the lower receiver, along with the safety and the safety pin.4.) Remove trigger, hammer, and springs.5.) Replace with the WOT (it will have a snug fit).6.) Anti-walk pins are included and should be installed on the trigger to avoid malfunctions.7.) Reinstall the safety pin, spring, and grip.8.) Reinstall the upper receiver.
