I was more than impressed with the Modern Spartan System’s formulas. They make the claims of accuracy, reliability and performance. With five (5) treatments to the barrel of my MK12 Head Down Products rifle, I tightened my groups sizes from just at 1 M.O.A at 100 yards to just under .5 M.O.A. I will never use any other cleaning system again, and I definitely recommend these products to anyone looking to increase reliability and accuracy in their firearms.