09-27-2013, 05:53 PM
I've had both on my Grendel. The ACE is lighter and quieter from a hunting standpoint. The MOE will accept a rail on the bottom for a rear monopod and also an adapter socket for a side mounted swivel (both are an additional expense). The butt pad that comes with the MOE is hard plastic... no padding and kind of slick if you are propping the rifle up in the corner somewhere it tends to slide. I replaced mine with a thicker pad to increase LOP. I like em both and am currently running the MOE.