I recently got a Bushnell Trophy red dot scope for my flat top AR but have encountered a problem.....obviosuly you guys can help. The pic below demonstrates my prob. The red dot is where the actual red dot is, and the greed dot is where I want it to be:

http://www.imagestation.com/picture/sraid63/pc382230733efeb53104b9e8226d494cf/fc15a6b1.jpg

Now there are a few things I am looking at:

-Std ARMS swan Sleeve (with flip up rear sight)
-RRA Riser (with A2 sights on it)
-Cheap $20 riser

The problem is that the swan sleeve looks like it wont have enough height and the RRA riser looks like it will be too high. And well..the cheap ones just cheap and had no rear sight. What would you guys recommend?

RRA riser:

http://abacus.sj.ipixmedia.com/abc/M28/_EBAY_432670b3ec213e0d256ce6e16f/i-1.JPG

Contact Wes at [url]mstn.biz[/url], and include that pic. He'll KNOW what'll work best, but I believe the ARMS #38 will come closest.

Nice diagram!  A picture really is worth a thousand words...

Let me know what you find out. I have an Arms #38 super-ex rail on my AR10-A4 carbine. I put a detachable armalite front sight on the picitanny rail up front and I mounted an Aimpoint ML2 with the Arms 22M68 ring mount. I want the red dot to be sighted at 25 yards for quick close stuff and the Iron sights for 100..anyway my dot hits the same point on my front sight as yours does...I was going to buy a folding front sight to slove the problem, but if I can save $130 I'd love to.

HK DUDE...are you using the spacer in your 22M68?   sounds like you're not....if so that could be a $7 fix

HK_DUDE has a ARMS#38 rail so he shouldn't need the spacer...?

9mm, you [b]don't[/b] want the RRA tac handle you pictured.  It'll probably put the dot way up so the post is barely visible in the sight, or maybe not at all.

ARMS#38 or cheap riser rail and a BUIS should both work.

What is the diameter of the Bushnell trophy? I have a tasco reddot and an ARMS swan sleeve that works perfectly. But it is a 33mm sight I believe. If yours is smaller it might not work.

You could also try Bushmaster's mini risers. They'd cost about $30.00 for two and bring you up .5 inch. I believe the ARMS brings it up about .46 inch.

[img]http://www.bushmaster.com/shopping/bmas/Images/yhm-226.jpg[/img]
[url]http://www.bushmaster.com/shopping/bmas/yhm-226.asp[/url]

Just right:
[img]http://www.hunt101.com/img/047931.jpg[/img]

RRA handle too high:
[img]http://www.hunt101.com/img/040099.jpg[/img]

Edited to add: I've also tried a cheap one piece riser. It was too bulky and too long, didn't allow BUIS.

Unfortunately I think the Trophy is 30mm. I need a height of at least 1.4". Where does your dot show up on the frot sight post? I dont really want the 2 to be on top of each other I'd rather have the dot over the front sight.

And what does BUIS mean?

BUIS = [b]B[/b]ack [b]U[/b]p [b]I[/b]ron [b]S[/b]ight

Ya, mine sets right about exactly on the top of the front site.

I don't think you will need to raise it up that much. .5 inch I think will give you plenty of room according to your diagram.
I didn't think the swan sleeve was going to work for me until I tried it (of course the tasco is 33-35mm I think so this could also make a difference).

If it's 30mm you also have other options, you could get some 30mm high rise scope rings and mount it like that.

BUIS-back up iron sights.

edited to add: Thanks Mike [:D]

IIRC the Army Tech manual says to set the post at 5mm high as a starting point for zeroing.  Since that's 1/5 of an inch, I would think any of the risers mentioned so far would work.  

If the scope will work with Aimpoint mounts, then you have a bunch of other options as well.