AR FastFire™ 3

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For AR and carbine shooters, the AR FastFire 3 combines the FastFire 3™ sight with the rugged AR-F3™ mount.

It’s the simplest and most effective way to mount any FastFire™ sight on an AR flattop as a standalone sight or as a co-witness for iron sights.

  • Includes AR-F3 tactical mount and 3-MOA FastFire 3 red dot sight
  • Positions the FastFire at the optimum height on an AR as a standalone sight and as a co-witness for iron sights
  • Sight is protected by metal wings on each side
  • Has convenient storage space for spare battery, open-end wrench, and Torx®  wrench
  • Fits any Weaver or Picatinny-style base

MSRP: $360

Compatible Reticles

FastFire™ 3-MOA Dot
FastFire 3-MOA Dot | Burris Optics
3 MOA sized red dot, perfect for more precise targetting

Available On: FastFire 3, T.M.P.R.
Learn More
FastFire 3-MOA Dot | Burris Optics

Specifications

Item Number
Description
Reticles
Reticle Color(s)
Kit
Combo Package
Magnification
Clear Objective Lens Diameter
Finish
Field of View
Mount
Close Focus
Eye Relief
Click Value
Height Above Rail to Optic Centerline
Elevation Adjustment, Total Capability
Windage Adjustment
Parallax/Focus
Length
Weight
Illumination Control
Illumination Settings
Battery
300215
AR-F3 Flatop FastFire Sight
FastFire™ 3-MOA Dot
Red
no
-
-
21x15 mm
Matte
-
Picatinny Rail Base
-
Unlimited
1 MOA
-
115 MOA
86 MOA
Parallax-free
2 in.
4.6 oz.
Manual push-button & automatic brightness adjustment
3 manual brightness levels; automatic setting reactive to environment
CR1632
FastFire Red Dot Reflex Sight
  • Bundles a FastFire III 3-MOA sight with the rugged AR-F3 mount, creating a convenient package for first-time FastFire owners
  • Protects FastFire optics
  • Ideal for multi-gun shooters
  • The mount’s height is sufficient to co-witness with flip-up sights
  • Bright red dot allows for fast target acquisition and easy aiming
  • Compact and lightweight, so it won’t affect firearm balance or handling
  • 1x magnification allows both-eyes-open shooting, for enhanced awareness and target acquisition
  • Parallax-free, for better accuracy
  • Fits any Weaver or Picatinny-style base for easy mounting
  • Windage and elevation adjustments make fine-tuning easy
  • Easy access to illumination controls
  • High-grade optical glass provides excellent brightness and clarity, with lasting durability
  • Index-matched, Hi-Lume® multicoating provides low-light performance and glare elimination
  • Waterproof
  • Durable and rugged, with shockproof design that stands up to years of punishing recoil
  • Features a compartment for carrying a spare battery and open-end wrench or Torx® wrench
  • Comes with our Burris Forever Warranty™
Name
FastFire 3 Manual
Type
 PDF
Modified
October 29, 2015
 
Name
New for 2022 | Burris Optics
Type
 PDF
Modified
May 23, 2022
 
AR FastFire™ 3 is rated 4.1 out of 5 by 579.
Rated 5 out of 5 by from Couldn't Be Happier I love my fastfire 3. As soon as Burris placed the battery where it could be removed without removing the sight I was sold. Its low profile and handles the abuse of my shotgun. My only complaint is when its time to turn the sight off you have to click the button through all of its settings before it can be turned off. It only has 4 settings but that is a just more times a button gets pushed. Also the lowest brightness setting is last and hard to see the dot on bright day and you could think you have it turned off. I feel It should have a hold down 5 seconds to turn off and thats the only thing I would change. Its outstanding otherwise. Thanks Burris for the greatest customer service ever
Date published: 2015-03-17
Rated 4 out of 5 by from old eyes young again I bought a Fastfire II and Burris rear site dovetail base for my Ruger mark II pistol. My eyes are not young any longer and I could not be confident of hitting my targets with the sights on my pistol. The FastFire solved that problem in a very satisfying way. I liked the sight on the.22 so much, I bought another to mount on my Redhawk 44 mag. The FastFire has worked out just as well on the revolver as it has on my .22 pistol. Took the Redhawk deer hunting and shot 2 deer using the FastFire. It was an awesome experience. I'm very pleased with this sight, though not having to remove it from the mounting base to change battery would be nice.
Date published: 2015-11-23
Rated 5 out of 5 by from takes a licking and keeps on ticking Ifbought my fast fire six months ago. It sighted in as easy as any other red dot I have and is bright enough for any condition I have been in. When I was at my gun club last week the rifle that my ar-f3 was on feel out of the gun rack when I was at the bench shooting another rifle. The rifle with the ar-f3 on it fell about 4 feet and landed on concrete hitting the ar-f3 first. One of the protective wings was slightly bent in. Other than that the sight held zero and is working fine. I can't find any torture test reviews online for the fast fire 3 but if it can take that abuse and hold zero and work just fine I think that is all I can ask of a red dot sight to hold up to
Date published: 2015-09-16
Rated 5 out of 5 by from Tough little sight Simply put, this is an outstanding sight, especially for the money. I bought two; one for a Beretta Neos (with a non-moving rail), and one for a Glock 34. I was most concerned about the one which would be "riding the slide" on the Glock with regard to durability. My concerns were unfounded. Both sights have functioned perfectly. You'd expect the one on the .22 pistol to be fine, and it has. So has the one on the Glock. No blinking, no turning off, has held zero perfect through 450 rounds so far. I did take to care treat all screws with Loctite and to let it cure for a full 24 hours before shooting. I'm very glad I didn't buy more expensive red dots; there was absolutely no need. The lifetime warranty sealed the deal.
Date published: 2015-02-27
Rated 5 out of 5 by from Great product Fits great on my Glock 35 M.O.S. I love the fact that it's small without being to small. The battery door on top is really nice, and sighting it in was quick and painless. Before I seen the Fastfire 3 I was about to purchase one that was over double the price. I had been looking for days trying to find a reflex sight for my new pistol. I was at my last store when I seen it in the case. I fell in love with it right away. It had all the features with half the price. If your looking for a reflex sight for home defense, and target shooting look no further then the Fastfire 3. It will not disappoint.
Date published: 2016-02-24
Rated 5 out of 5 by from Excellent product/value Bought this on Amazon to complement the AR 536 which is mounted on my Windham AR-15. It is very light weight and doesn't add much bulk to the sight. It is very well made. The auto brightness feature works very well and the windage and elevation are easily edjusted using a thin blade screwdriver. I read several reviews on the FastFire II and the biggest complaint was that you had to remove the sight to get to the battery compartment. The FastFire III has the battery compartment on top and that's why I chose that modle. I have fired approximately 500 rounds since adding the optic and it has held zero. I am very satisfied with this purchase and would recommend this to a friend. I could have spent more on another brand but so far I don't see the need.
Date published: 2015-05-20
Rated 5 out of 5 by from FastFire III/MTAC combination for the AR-15 A little over a year ago, I bought a Burris MTAC scope for my AR that came bundled with the FastFire red dot. Owing to family and work obligations, I didn't have the opportunity to really evaluate the system until quite recently. The scope was great, but I couldn't reliably turn on the FastFire, and it would often turn off with recoil. Not good. So I contacted Burris, concerned about a year having gone by. Burris immediately suggested I return the FastFire for evaluation and repair, preparing me for a several weeks turn around time. In a little more than a week, a new FastFire was returned to me (at no charge), and this one functions perfectly. I am very satisfied with the scope/dot combination. The quality and performance is top notch.
Date published: 2014-10-08
Rated 5 out of 5 by from For Aging Eyes....This Does The Trick! This is the second FastFire III I have purchased. This unit was for my wife's Ruger 22/45 Lite which I matched up with a mount from MaddMac's Precision Tactical and she couldn't be happier. I had narrowed my search for a red-dot down to a couple of units, but in the end I went with the FastFire as I already owned one and it has been great so far. My calculation was why try something else when I'm not sure I will like it, and also it keeps me with parts commonality so I can carry a spare battery or whatever and it will fit either unit. Have only been to the range a few times with either unit, but so far zero complaints.
Date published: 2014-10-08
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Is there a torque spec for the screws on the fastfire 4?

Asked by: Walshjuice
We recommend about 12 inch pounds.
Answered by: Burris Support
Date published: 2023-01-31

Will this optic fit the Sig Sauer P365 XL?

Asked by: Bulldawg45
Yes absolutely. You'll just need to use a Doctor footprint plate/adapter.
Answered by: Burris Support
Date published: 2023-01-31

Which sights do you have to fit the new Glock 21 Gen 5 MOS model?

Asked by: MikeyH
The Fastfire 3 and 4 will fit the Glock 21 Gen 5 MOS. You'll need the plate cut for the Docter footprint. (usually plate #1)
Answered by: Burris Support
Date published: 2023-01-31

I have a Fastfire 3 and a PDP f What size mounting plate do I need ?

Asked by: Breeze
You'll need the plate that is made for the Docter footprint, as that is what the Fastfire uses.
Answered by: Burris Support
Date published: 2023-01-31

Does Burris offer a filler plate to be used on the slide when the FF III is removed from the slide?

Asked by: Gary D
We don't have anything like that unfortunately.
Answered by: Burris Support
Date published: 2023-01-25

What mounting device is used for attaching a fast fire 2 4 Moa to a nitro fire stick muzzkeloader

Asked by: Danoc243
You would need a picatinny rail, and then the Fastfire would sit right on that with it's included picatinny mount.
Answered by: Burris Support
Date published: 2023-01-25

My fastfire 2's red dot seems to be very dim in low light environments and completely non existent in the dark. Is this normal or is there something wrong with it?

Asked by: Cambeezy72
Over time the light sensor in the front of the sight can become occluded with debris or dust. We recommend a cotton swab with some rubbing alcohol. If you apply that to the small pinhole on the front of the sight, it usually will dissolve anything in there affecting the light sensor. If that doesn't work, we would most likely need to get it in for repairs under warranty.
Answered by: Burris Support
Date published: 2023-01-25

I lost one of the flathead screws, can I buy some from you because I can find any at the local gun stores

Asked by: World Champ 89
https://burris.supportsync.com/
Answered by: Burris Support
Date published: 2023-01-03
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