When I first started shooting NRA highpower in the late 80"s the M14/M1-A was on the cutting edge and AR15(mouseguns) where looked down on. Today it is just the opposite. The AR15 rules the NRA highpower firing line and M14/M1-A shooters(the few left that are still holding on) are for the most part no longer competive). The M14 might have a slight advantage at 600, but the AR's eat the 14 alive at 200/300 rapid fire. Its all about less recoil to knock you out of postion, 1x8 twist HB, free floated AR barrels, etc. Price also: you can pick up a AR15 match grade for around $1200.00 that will shoot master level scores right out of the box, thats not even half way to a match grade 14.