I too have them installed on my MK IIIs and have had no problems. Just take your time making the adjustments; a very tiny adjustment then try it at the rangeCooper 54 said:For under $ 40.00, the volquartsen target trigger is hard to beat. I have installed the trigger on a couple of my MK lll . With the adjustment screws on the trigger , it will take most of the over travel and the mushy feeling out of it. Comes with simple instructions.![]()