First off, thanks for looking

I just received my new Colt 6400C M4 A3 carbine. I'd like to add an Aimpoint CompM2 but I need some guidance on a suitable mounting ring and backup iron sight.

Originally I was going to simply buy Aimpoint's stock ring with spacer and mount the sight on the receiver rail, but there are a bunch of different options available from GG&G and ARMS. Can someone point me in the direction of the most durable solution? Price is a consideration but I'll pay more if one product is clearly more durable than another.

Next, what about a flip-up iron sight for a backup that is tall enough to mount directly on the receiver rail?

Thanks in advance for your help. I tried a search but for some reason the search page comes up blank for me. Please accept my apology if these questions have already been covered ad nauseum.

There's the ARMS SIR route, w/#22M68:
[img]http://photos.ar15.com/ImageGallery/Attachments/DownloadAttach.asp?iImageUnq=1367[/img]

ARMS 38EX, w/#22M68:
[img]http://photos.ar15.com/ImageGallery/Attachments/DownloadAttach.asp?iImageUnq=6198[/img]

The #38 comes w/ the ARMS #40, extra on the SIRs:
[img]http://photos.ar15.com/ImageGallery/Attachments/DownloadAttach.asp?iImageUnq=1368[/img]

Or go the EOTech route and #40, which is a bit cheaper, as EO mounts directly to the flat-top:
[img]http://photos.ar15.com/ImageGallery/Attachments/DownloadAttach.asp?iImageUnq=16333[/img]

These are my favorite choices, btw the #38 comes in SuperEX length, check w/ Legal Transfers, CMMG or MSTN on the EE or Donnie here: [url]www.sableco.net[/url], I've dealt w/ them all and their all top notch....

Mike

BTW - if your NOT gonna need a NV device you'll save a few bucks w/ the ML2 over the M2....

I like the ARMS 22M68 Cantilever mount and #40 BUIS.  Rock solid, and the 40 is THE best back up sight, having tried them all, IMHO.

[img]http://photos.ar15.com/ImageGallery/Attachments/DownloadAttach.asp?iImageUnq=12665[/img]
[img]http://photos.ar15.com/ImageGallery/Attachments/DownloadAttach.asp?iImageUnq=12668[/img]

i went Arms super swan and mounted the scope forward using the factory mount.

If your search had worked I think you would have found that the Arms #22M68 and #40 BUIS are by far the most recommended.  I have that set up on my M4 and it works great and is sturdy as can be.

Good luck.

Excellent. Thanks for the help guys, I'll buy an ARMS #22M68 and an ARMS #40 BUIS.

Judging by the pics that some of you posted, it looks like the #40 BUIS mounts right to the receiver rail without the need for an additional spacer. If I use a #22M68 directly on the rail will I need the small spacer that goes directly under it to bring the Aimpoint up high enough to zero it with the irons? In the interest of keeping it simple (and cost effective), I don't think I want a swan sleeve or a SIR system. Ideally I'd like to simply bolt the Aimpoint and backup iron directly onto the receiver. Can I do this with the #22M68 spacer?

[img]www.imagestation.com/picture/sraid79/ped35f040c09d66328328b8d26d704d67/fb1deba7.jpg[/img]

[:d][:d]

Mount the 40 directly to the rail and use the cantilevered spacer from MSTN on the 22M68 which will mount directly to the rail.  You want Lumpy's set up... its the best for a CQB rig you can get.

Actually the ARMS #22 item is scope mounts, and it's the ARMS #40 BUIS shown on Lumpy's rifle, of course ARMS sells so many great products, it's easy to get confused over the #.

Mike

Good point.  Thats what I get for posting before coffee.

Thx for pointing that out Wilson