At first, I was only looking for an optic for my LWRC M6-SPR, because the EOTech placeholder on it just didn't feel right. So long story short, I ended up buying a Trijicon ACOG TA31ECOS-G and put it on my M6A2 DEA, and moved the TA01NSN ACOG from the M6A2, and put the TA01NSN ACOG on the SPR. I must say, that this optic is beautiful. Crystal clear glass, on both the ACOG and the RMR, and the reticle is a lot brighter than your regular red illuminated ones; this one in particular is a green illuminated crosshair, with BDC out to 1000m, not that my rifle would ever be able to hit anything that far out, but hell, it is what it is. I love the 4 MOA red dot on the RMR- perfect to pick up, but not so big as to not be usable at longer ranges. I'm gonna take it out this weekend and zero both of them.