Geissele Automatics are considered the premiere semi-auto AR trigger for competitors and serious shooters. They feature a high-speed hammer that cuts lock time in half compared to standard hammers. This two-stage trigger is adjustable for overtravel and sear engagement. They give you the smooth 1st stage, followed by an ultra-crisp break on the second stage. Service rifle trigger's 1st stage pull weights range from 3.2-5 lbs, 2nd stage pull weights range from .5-1.5 lbs. Includes instructions. Minor fitting may be required. Match rifle's 1st stage pull weights range from 1.3-3 lbs, 2nd stage pull weights range from 4-14 oz. Includes instructions. Minor fitting may be required. These triggers come with fitting pins (one for the disconnector, another, longer pin for the hammer and trigger), an extra hammer pin for slightly oversized or worn hammer pin holes, a small bottle of oil, detailed instructions, and a vial of grease. If you are looking to upgrade your stock AR-10 or AR-15 trigger, you can't go wrong with the Geissele Automatics. The triggers I have in stock, are for small pin receivers, not Colt commercial. I will be happy to order large pin versions in the above models. Geissele also makes a Designated Marksman Rifle version of the trigger. These retail for $279. CrossRoads' price is $259.