Doc, just continue swapping optics and sights around until you shoot them enough to figure out what configurations you like. That's what I'm currently doing with Aimpoint Micros, an NF 2-10x, Leupold 10x and Primary Arms 1-6 along with swapping around muzzle devices and a suppressor. The uppers I'm playing are 10.5", 11.5", 14.5"' and 20" Hbar profile. I had a 16" upper but it was traded away.
I'll share some observations, if I may. First, I prefer not having an FSB when using an optic. It's not so bad when using an Aimpoint because I can take advantage of the Aimpoint's unlimited eyebox to look over the top of the front sight, whether I'm using 1/3 or absolute co-witness. But the smaller, limited eyebox of the magnified optic means the front sight always blocks the bottom half of the reticle rendering the hold over marks useless. Therefore, any upper that gets dedicated to magnified optic use will not have a fixed front sight. Even when using an Aimpoint, my preference is to not have a fixed front sight.
Second, heavy optics will make themselves felt. Changing from a 4 ounce Aimpoint Micro to a 26 oz (with mount) LPV will turn a fast handling carbine into a slug. There's no denying that an LPV is more versatile than a non magnified Micro, but do yourself a favor and buy the lightest scope and mount you can afford.
Third, when using a variety of uppers on a single lower, or when swapping uppers between different lowers, it's important to have everything sorted out. Use a conservative buffer weight (a buffer that falls between an H and rifle buffer in weight) and a quality recoil spring. Either use barrels with the correct port diameters or use an adjustable gas block. Don't use generic extractor springs. I've installed Colt extractor springs in ALL my uppers and have seen a marked improvement in reliability.
Fourth, I find there is a difference in how a 14.5" upper and a 16" upper handles and shoots. It's subtle and I can't quite put my finger on it, but it's there. Enough that I much prefer the 14.5" upper.
The only QD mount I'm using is the Scalar Works mount on a T1. I don't trust the durability of the flip lever QD mounts. For the other mounts, I keep a box end, Torx bits and Allen keys in the range bag
Bookmarks