Decided on going with and EOtech.  I'm down to either a 551 or a 552.  I'll be mounting on a flat top reciever and was wondering if the AA battery models might be too long for this?  Anyone got any pictures of them mounted on Recivers, it seems everyone's mounting them clear forward which isn't an option for me.

The 552 will work just fine!  You'll still have room for an ARMS #40 too! [:D]

[img]http://a6.cpimg.com/image/70/D2/19917936-d7a4-02000180-.jpg[/img]

552a.65's (AA) will mount just fine as Yojimbo pointed out. Non-AA models will just leave you a tad more room [:D]

I have a 552 mounted on a bushmaster 16" VMatch with an Ace Stock in roughly the same position (maybe one notch further back toward the rear) as Yojimbo's pic (sans any iron sights).

Slickest damned rifle I've ever touched in my life!  Best AR I've ever even held.  Did I mention I really like it?

Go for it.  It'll work great for you.  

In fact, I'm buying another one, just because I subscribe to the "have two of everything, stored in separate places" Theory.  That's THE set up (for me - your mileage may vary).

Thanks for the help, placed and order for a 552 last night!

By using a standard handguard over an M4 "oval" ya can mount the "AA" EOTech 511.A65 foward on your flat-top, w/ no interference.... and still change the batts, without affecting your zero.

[img]http://photos.ar15.com/ImageGallery/Attachments/DownloadAttach.asp?iImageUnq=16329[/img]

Closer view:
[img]http://photos.ar15.com/ImageGallery/Attachments/DownloadAttach.asp?iImageUnq=16333[/img]

Mike

Here's a 512 and an ARMS #40 mounted on a standard receiver
[img]http://img.villagephotos.com/p/2003-7/188491/newarfull.jpg[/img]
[img]http://img.villagephotos.com/p/2003-7/188491/newartop1.jpg[/img]