I want to put a scope on a flattop AR.   High rings are not high enough.   Any recommendations on a GOOD riser?   What combo of rings / riser works the best?

is there a reason why high rings are not high enough?
i have high rings on mine and it works great for me

Quoted: I want to put a scope on a flattop AR.   High rings are not high enough.   Any recommendations on a GOOD riser?   What combo of rings / riser works the best?

First, how big is the dang objective lens?  Are you trying to hook up a 56mm or something?  Second, the issue I see about using risers/rings/etc. is eye relief.  Most times the scope will not give enough eye relief with that setup.  Instead of doing all that, go get a Larue MRP or an Armalite 1-piece mount.  Both have their pros and cons and they will work without using any risers and whatnot.  They sort of have an offset to give proper eye relief.  I have a Leupold 4-12x40 mounted in an Armalite 1" mount and it's perfect for me.  Sits the scope nice and low.  MJD

The Leupold and Badger Ordinance and Warne ultra high rings are all designed to place the center of the optic at the same height as the original rear peep.  Caution, they're expensive, but uber tactical cool!  I have a set of heavy BO ones, and they're super nice but heavy.  Rock solid, though with my Leupold tactical 30mm tube.

Most of us just use the generic mount that looks like the Armalite Wilson Combat unit but has a street price of about $50ish on GunBroker (unless you're planning on spending some time in the field dispatching hajis or some zombies).  Same components (I compared them side by side) but the AR has the holes cut in the risers to slim some weight off of it.  Works fine, lasts long time for the average shooter.  I have a Bushnell 4-12x40 and that works fine, too.

Tom  


ETA I got it wrong, it's not the Armalite mount.  The Wilson Combat and the ProMag are the same unit, just that the Wilson has lightening holes in it.  Check 'em out at MidwayUSA, and you can get them on gunbroker for $50 or less.

the reason the high rings dont work for me is that the scope does not line up with my eye, maybe i have a big head.   im putting on a burris 3-9x40

    Be sure to consider eye relief as well as height - the Picatinny rail on a flat-top may not let you mount the scope far enough forward for a comfortable position, especially in prone. I use an extended riser (1/2" high) made by Accuracy Speaks (available direct or from Brownell's) combined with standard-height rings.  There's now a similar one available from Compass Lake Engineering.  This gives me an extra 4" of rail and lets me mount a Leupold 6.5-20x50 LRT (a rather long scope) and gives me the option for an extra 15' of built-in elevation for long range work. I'm using Burris Signature Zee rings - they are inexpensive and work well, even though they don't have the macho look many seem to like.  They use a floating plastic bushing to minimize stress on the scope tube and simplify installation, and offset bushings are available.  Bushings with a 0.010" offset are included with 30 mm rings, and 0.010", 0.020" and 0.030" bushings can be purchased for 1" rings.  They're inexpensive and work very well.  I use them on my spacegun to mount a VX-III 6.5-20x50 LRT and have never had a problem with them.

   Also remember that your windage range is restricted when you are at maximum or minimum internal elevation.  You can't apply maximum elevation and windage simultaneously due to the round scope tube.  You won't need large amounts of windage at 100 yards, but you could need 20+ minutes at 1000 on a windy day.  There are minor optical distortions that may be more apparent off center, but the biggest reason to stay on center at long range is to have adequate windage adjustment available.

i use burris signiture rings also.   I most likely wont be using this for 600 or 1000 yard competition as i shoot highpower (servicerifle).  just had an extra flat top laying around so i put an old match barrel on it and want to put a scope on... for the heck of it.  maybe test loads at 100 - 300 yds.

Quoted: the reason the high rings dont work for me is that the scope does not line up with my eye, maybe i have a big head.   im putting on a burris 3-9x40

I have the same problem if my eye is not lined up just right. I have to press my cheek lightly in to the stock to see thru properly.
One thing for sure is I get the same position everytime or I can't see. It's hard to do under stress but varmit hunting it's not too bad.
Here's the Armalite