I have recently installed a JARD 3 lb. adjustable trigger in my Colt m/6700. Very nice trigger. No alterations, or removing metal from the trigger are required. I ordered mine directly from JARD . He answered email that it does include JARD speed hammer. I ordered it and didn`t receive any email confirmation from them. So I waited. Showed up in my mail box about 2 weeks later (worth the wait). Read the written instructions through a couple times, then follow each step while installing the trigger. The kit includes a sear engagement adjustment set screw that goes up inside the pistol grip screw hole. The hole in my pistol grip was not threaded completely through. I borrowed a 1/4x28 thread tap, thread cutting oil and threaded it on through.(no biggie). The set screw protrudes about a 1/4 inch into the hammer/trigger/sear cavity to adjust the sear engagement. Read and follow the instructions about this and it is very easy. There is also a shorter screw supplied with the JARD kit that is used to hold the pistol grip on. But I found it was short. I used a fine thread nut and screwed that all the way onto the longer original pistol grip screw, so that it wouldn`t go as far into the hole, but long enough to securely hold the pistol grip on, keeping the grip from being loose. Military range masters teach DO NOT pick up AR/m16/M4 rifle by the pistol grip. ALWAYS grasp the hand guard or carry handle or sling when picking up your rifle. There are four adjustments on the JARD: sear engagement, disconnector, safety, over travel. Trigger is easy to install and adjust if you follow the well written steps in the instructions sheet.