Aimpoint Compm3 co-witness

[pointblank4445]

Absolute Co-witness is okay ( I use that height anytime I run fold down sights to get the sight as close to the boreline as possible. If you have fixed sights, you never want to be below absolute co-witness. Most prefer either a little above the front sight (Aimpoint 39mm height on a standard AR) or a full lower third (LaRue "Tall" on a standard AR).

By "below" meaning the co-witness is between absolute and lower 1/3rd, but closer to absolute in that the dot and aligned sights sit just at or below the the center line of the optic.

[camarena226]

Any news on the mount?

[pointblank4445]

I haven't shot this setup much; only once actually to get verify zero and alignment. I commented on the 2 posts above regarding the sight picture. However, there seemed to be some confusion between Nyeti and myself in regards to some terminology. Here is my interpretation on the sight picture.

Again, here are visuals of Absolute and Lower 1/3rd:


Here is the co-witness sight picture for the RAS II/HK 416 as it appears to me in relation to the Absolute and Lower 1/3rd:


It's a very usable setup/sight picture. Because the M3 more "open" shall we say with the it's bigger lenses, body and the 416 sights don't cover as much down range compared to other iron sight profiles, this setup can work. Now, I would certainly never use this near-absolute co-witness with say a Micro T1 AND traditional AR15 A2 iron sights.

[Grumpy]

I just tried the HK diopters with an aimpoint + mount - spacer.

Gave an absolute co-witness and simply cluttered the hell out of my FOV.

I added the spacer back and put the Matech/Troy flip up combo back on as well.

If I had the HK flip ups, it wouldn't be so bad and i'd stick without the spacer, but I don't, so the diopters have to go.

[nyeti]

Sorry, I was out of town for awhile. Great pics pointblank, far better than what I draw on the board when I am teaching. You are dead on. The sight picture you have with the bottom picture is just fine with that combo. As you said, that would not fly with typical AR sights, but will work with what you are using. The way I was reading it was that the dot would be farther below where it shows in the picture.