Mine shipped last week. Was easy to install takes about 10 seconds. Gauged factory trigger pack at 10lbs, and Timney at 4lbs. Day one range test Took it to the range and reinstalled the old trigger. Shoot about 2 to 1 1/2 inch groups at at 100yrds with a Eotech XPS-2. Switched in the new trigger groups were at 1 inch, and was able to shoot faster. That day the weather was showers off and on so I was only able to shoot about 40 rounds. Day two range test. Took it to a friends house to work on some drills for our upcoming 3 gun match. I switch back in the old trigger some my friend could see the difference. I did added some oil this time to the new trigger. He shoot the new one about 10 shoots, and was like I need one! We then switch to some rifle drills shot around five shots and no bang. Pulled mag, checked barrel, reloaded, and shoot another five shots. Again it didn't fire on the six round. Checked rifle switched ammo, and reinstalled the trigger. I shot about 20 rounds until it had another malfunction. I picked up my unfired rounds, and notice I was getting a light fire pin strike. Tried some other ammo type, and it stated light fire pin striking on ever other round. Next day I cleaned my rifle, and removed the Trigger pack. went on line, and of course with it being so new there wasn't any info. Like I mentioned before the only thing I did different then the first day was add oil. So I cleaned it. Day at 3 gun match I was told we would have time to sight in, but we didn't. Get to the first course with me rifle, and it fires the first two and then failed on the next five. I had to switch out back to the old pack. Lesson learned. Take your rifle to the range day before you run a match. i was also shooting 7 inches low. I called Timney the next Monday, and they said I needed the heaver spring. Showed up three day's later. People are starting to post on forums with the same problem. Was easy to install. I did a trigger gauge test on it, and its about a half pound heaver setting at 4 1/2lbs Day three range test. Put 100 rounds with new spring. So fair not one light primer strike. With update if anything changes.