EU - FastFire™ 4

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Everything you loved about the FastFire 3 plus...

  • Toggle between four different reticle options
  • Larger sight window for faster target acquisition
  • Longer battery life - up to 50k hours on medium brightness
  • Brighter aiming point
  • Optional screw-on weather shield for a completely enclosed sight
  • Auto-Brightness & Auto-shutoff after 8 hours


Item Number
Reticle Color(s)
Combo Package
Clear Objective Lens Diameter
Field of View
Close Focus
Eye Relief
Click Value
Height Above Rail to Optic Centerline
Elevation Adjustment, Total Capability
Windage Adjustment
Illumination Control
Illumination Settings
FastFire 4 Multi-Reticles
Picatinny Mount / Docter Optic
90 MOA
90 MOA
1.9 in.
1.6 oz.
FastFire Red Dot Reflex Sight
New for 2022 | Burris Optics
May 23, 2022
EU - FastFire™ 4 is rated 4.1 out of 5 by 518.
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 1 out of 5 by from Poor design battery compartment. Way disappointed. Was impossible to install battery. Brand new unit using included battery that is thicker than the battery compartment. Was impossible to get the theads to catch,, Also the hood is slightly over the cap so u cant push straight down. I am an engineer and electrician. I couldnt get it on sitting at my desk under a magnifying lamp. No way Id ever be able to change battery at a range. Cap screwed right on with no battery,, but no way it would go on with battery. If it did I imagine the threads would strip after a couple uses. Only good thing I can say is I bought it from Midway so can return for refund and buy a decent sight.
Date published: 2018-05-09
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I need a new battery cap for a ff3, how can I get one

Asked by: Aglg127
We can definitely send you a new one:
Answered by: Burris Support
Date published: 2022-06-10

Does this use same mount and screws of fast fire 3? 

Asked by: Anonymous
That's correct
Answered by: Burris Support
Date published: 2022-06-10

Is Fastfire 4 same footprint as vortex venom?

Asked by: Tim2tx
Yes they'll have the same footprint.
Answered by: Burris Support
Date published: 2022-06-03

I own a Fast Fire II, the 2 Screws that hold it on came out and could not be found.   Where can I get replacements?

Asked by: Andy 249
We can send replacements. Please go here to get started:
Answered by: Burris Support
Date published: 2022-05-16

Can this be mounted on 92FS Type M9A1? If so, can it be mounted without any modification on the top of the slide? Can I use the mounting plate without any issues on the small part that goes up when you pull the trigger? Can I talk to somebody?

Asked by: Tony E
No problem, the Fastfire can mount on the M9A1. Item 410324 Sure you can talk to someone: 888-440-0244
Answered by: Burris Support
Date published: 2022-05-05

How do you change the battery in the FastFire 2?

Asked by: Allie73
Once the sight is removed from the mount, the battery can be removed from the bottom of the sight. The new one goes back in, + side up.
Answered by: Burris Support
Date published: 2022-05-05

I am interested in the Fastfire 4 to mount on my 44 magnum pistol.  Is this sight made to withstand that kind of recoil?  Also, what kind of warranty does this sight come with?

Asked by: Pin shooter
They're rated to .50BMG, so no problem on recoil. They'll come with the standard Burris Forever Warranty (lifetime).
Answered by: Burris Support
Date published: 2022-04-27

Is this scope dot designed for shotgun use

Asked by: TurkeyD
They are indeed designed to work with shotguns! They're very popular for turkey hunting and waterfowl.
Answered by: Burris Support
Date published: 2022-04-27
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