Burris Fastfire on an AR?

[Fire Ant]

I've had my share of optics, ACOG, Eotech, Aimpoint M series and Micros...
I prefer the Aimpoints but realized that I had picked up a Fastfire awhile ago that was to be a CQB backup to a scoped AR10. The AR10 doesn't see a lot of range time (ammo costs too much).

So, my question is anyone running one on their AR15 or similar .223/5.56 platform? Opinions?

 

[jjohnwm]

I've had a Fastfire mounted on a Norc M14S for about 500 rounds, then moved it to a CZ858 where it lived for a fair number of rounds. It held up well, with no problems. I was using the Burris steel protective mount that just bolts onto a Picatinny rail.

If I were doing it now, I would probably go with the Fastfire II, which is supposed to be waterproof/fogproof. The Fastfire wound up on a 10/22 which I was using when I got caught in a light rain shower. It stopped working almost immediately, but after drying out for a few days with the battery removed it was fine.

 

[canucklehead]

The biggest downside will be the need for a riser and the lack of click adjustments. It can be annoying when trying to zero.

I had a fastfire II and it was a nice compact little sight... Well suited for a shotgun, but not ideal for a rifle past 50 yards IMHO. Make sure yours in 4moa dot, as the 8 is way too big for any kind if precision work.

 

[300Spartans]

I think it would be good as a canted back-up, or directly on top of a carry-handle mount. It's low-sitting and mounted on the carry-handle would be ideal.

For a small sight, they can take a good amount of abuse. I had one on the Marlin, and it was quite functional.

 

[Fire Ant]

Thanks for the replies fellas!

Yes, the riser issue is the only major hurdle at this point as the AR it's going on is a 10.5" with a FSB. Brownells sells an elevated mount for the J-Point sight that co-witnesses with the standard A2 FSB. I'm not sure if the Fastfire and J-Point share the same mounting body type. It's a bit expensive though, coming in at over $100 USD.

EDIT: Jpoint and Fastfire have diferent mounting positions
Back to looking for an appropriate riser...

 

[rhs]

I have a Fastfire II set in one of the Burris protector mounts with the wings. Currently mounted on a Ruger SR22 using a YHM short riser that I ordered from Brownells. Cost was somewhere around $20. It is just slightly shorter than the FastFire itself. It elevates by 3/4". Brownells also makes a similar one that only elevates 1/2". Given that the sight alignment is the same on the SR22 as an AR, I would not want to go any lower than a 3/4" riser. Don't ask me about co-witness since I don't have irons on my SR.