Just got my new Aimpoint M2 & Larue standard-height (lower 1/3 co-witness) throw-lever mount. Thank you GandR. I'm not new to optics. I have experience with traditional scopes and red-dot sights on other firearms. This is my first personally-owned Aimpoint though, I've been using irons (still love'm!) on my AR since I bought it. I want to get your guys thoughts on this experiment.
I have been playing with mounting the Aimpoint in a traditional right-handed position (power knob @ 1:30 viewed from rear) and upside-down (power knob @ 7:30 viewed from rear). What do I hope to accomplish by doing this, what is the point? Because I see the Aimpoint knob as its achiles heel. I've seen plenty of pictures and heard plenty of stories of broken Aimpoint knobs. Obviously this is not often considering the sheer number of Aimpoints out there, but it CAN and DOES happen. So I say why not mitigate it if the trade-offs are minimal? So I set out to see just how minimal or not the trade-offs are. The Larue mount is what makes running the Aimpoint upside-down possible. Here are my observations:
Upside down in Larue mount, shooting right-handed or left-handed:
-Aimpoint power/brightness knob much more protected. Almost any drop of the rifle is not going to allow the knob to absorb the full impact as other parts of the rifle will be hitting the ground first or simultaneously. Elevation adjustment is also more protected (doesn't really matter though). When the Aimpoint is mounted traditionally the rifle has a wide drop-area that could land directly power-knob first even on flat surfaces.
-Same/somewhat easier to use power control knob with left hand. Slightly more trouble to operate with right hand, but not difficult. Pretty easy with a little practice actually. Can be manipulated with right thumb if there is space infront. Right index or middle finger must be used if blocked by BUIS, NV gear, etc. I see this OVERALL as a wash. A slight plus for right handed shooting (easier to actuate with left hand, keep right on pistol grip, not block sight picture). A slight minus for left handed shooting as you must reach to the other side with your right hand if you want to keep the left hand on the pistol grip.
-Windage adjustment the same, just on left side. Easy to remember no matter how you mount your Aimpoint.. knob arrow direction (counter clock-wise) moves POI toward knob you are adjusting side (goes for both knobs).
-Elevation adjustment. This I see as the only REAL downside, but it is mitigated quite well with the Larue mount. Remove mount, adjust elevation as normal, re-install mount. Unlike most other mounts the Larue does not block the elevation adjustment when it is facing downward. And because it is a throw-lever mount it returns to zero every time, so removing it to adjust is a non-issue from a POI shifting standpoint. In all you are only adding the time to remove the mount and reinstall it. You can still get in there pretty easily to adjust it without removing the mount from the rail with an appropriate tool, without a tool takes too long and is too much trouble.
-Irons co-withness the same, sight-picture is the same, caps flip-down out of the box (would make them flip-down anyway), slightly less clutter (Aimpoint width at top, elevation & power/brightness adjustment) above the Aimpoint -- a small plus when using rifle-mounted NV.
None of this interferes with my planned use for this optic:
I prefer shooting righty, but do shoot lefty sometimes. With a 0-300 yard flat trajectory, I don't ever plan to adjust the elevation on my Aimpoint for a "long range" shot. Even a normally mounted Aimpoint, I still wouldn't remove the elevation adjustment cap and adjust elevation in the middle of SHTF to take a 450y shot (that will probably never present itself to/for me in my lifetime anyway) with an 1x/4MOA Aimpoint. At that range with an Aimpoint the majority of the time it's evade or avoid & close-the-distance. If it's so desparate I need to take a shot NOW I'll be holding over (16" bbl, Mk262 Mod1+250y zero, shoulders @350y, top of head@400y, lots of praying) as I wouldn't have time to adjust it anyway. Even if I wanted to adjust the sight, takes a lot longer to remove the cap and adjust the sight than it does to remove and remount the optic. It's zeroed on the range and then it's not touched.
Anyway.. these are my leanings/observations so far. Yeah, it's unconventional, please don't flame me personally for it. I'm experimenting & trying something different with new equipment, and sharing my observations. Not claiming it is better. I'm looking for feedback/discussion. Mainly, are there any other negatives I'm overlooking? Thanks in advance.
Edited to add "o'clocks" to better explain power knob position.