What's the best mount for an Aimpoint CompML2?

[Jicko]

What's the best mount/mounting option/mounting height for an Aimpoint CompML2 on a M4?

[aplinker]

Depends on what you want and if you'll be running other optics with it.

The 3 things to consider are: attachment method, co-witness type, and standard or cantilevered.

If you think you'll ever want a magnifier or NV behind it, you'll want a cantilevered mount.

ARMS, GG&G or Larue make QD mounts. The QRP is also pretty cool. You'd need the spacer with it. They all have cantilevered versions, too, except the QRP.

The GGG has a sweet little extra battery compartment, but the screwed up location of the ring bolt-together (they're at the 10:30 and 4:30 positions) as the M3 scope cover (rubber) won't fit properly with it.

I like Larue a lot. Their mount, if you're going to use a magnifier, would be the choice because their flip magnifier mount is just plain awesome. ARMS is nice because they sell different spacers that attach inside the same mount to give different cantilevered and co-witness options, should you ever want to switch to, say, an M1A and lower the height.

[Jicko]

I was thinking about the regular A.R.M.S. #22M68, and not the cantilever, what make it not possible to use a magnifier with just the #22M68 non cantilever??

Also, can I just use a regular ARMS #22 HIGH rings? I actually have a spare pair. Is it good enough??

[aplinker]

You can really use about anything that holds it at the right height. High rings aren't going to be high enough on an AR -- they're a bit too low for proper eye height. You might be ok with it. You have it, so try it.

You can't fit a magnifier and Aimpoint on a flat top without a cantilevered mount because the cantilever gives more room on the flat top. The cantilevered mount pushes the length out the front over the handguard, so the magnifier/NV can fit behind. You can get an Aimpoint, magnifier and BUIS on a flat top with a cantilever, not gonna happen without.

You can see here in the comparison

[aplinker]

I forgot to add you could use that mount with the cantilever spacer extension if you decided to add a magnifier.

In a lot of ways it's the most "adjustable" of the mounts.

[Jicko]

Thanks for the pics. They spoke more than a 1000 words.

[aplinker]

Thanks for the pics. They spoke more than a 1000 words.

Glad to help.

I like the ARMS mount because of its flexibility. If you're interested, I have one of these I'd cut you a deal on. I actually want the ARMS mount for its low mount on a Scout rail.

[Teletiger7]

I heard the Larue and AMD mounts are excellent.

[drifts1]

Burris makes rings with different heights, 1/4", 1/2", 3/4" 1". Which, if any would cowitness with the BUIS?

[aplinker]

It would need to be pretty tall. An Extra High ring just barely centers a scope at the right cheek weld height.

What's the price on the Burris ring? I really like Aimpoint's QRP if you're just going to do a simple ring.

[maxicon]

Burris makes rings with different heights, 1/4", 1/2", 3/4" 1". Which, if any would cowitness with the BUIS?

The Burris XTR rings are spec'ed to the base of the ring, not the centerline, so you'd need to add 0.59" (30mm) or 0.5" (1") for the centerline height.

Typically, you'll get absolute co-witness around 1.4", and lower 1/3 in the 1.5-1.7" range, depending on the optic.

For a 30mm mount, absolute co-witness would be closest with the high rings (0.75" + 0.59" gives 1.34" centerline). X-high would give you 1.59", which should give a lower 1/3. You could find out for sure by asking LaRue what the height on their Aimpoint mount is - many manufacturers don't spec this, for some reason. This is also why buying a mount designed for Aimpoint, like the LaRue, can be a good idea - you avoid the uncertainty.

The Burris XTR are good rings for the money - the cross-slot screw has a 90 degree cutout for seating against the slot edge, making it more effective as a recoil lug. They're also relatively light for their massive appearance, being made of aluminum. The width can be a problem on some scopes, but isn't usually an issue on an Aimpoint.

Note that there are pretty close airsoft clones of these rings, so be careful where you buy from!