BURRIS FastFire Series Secure Reliable Durable Easy-to-Maintain Mounting System for Red Dot Shooting Sights

Quality-made product specific to your model. Fits "Doctor"-style red-dot sights precisely. Dovetail fit perfectly. Be aware that the screws provided by Burris (mount) and AT3 (my red dot sight) were too short and would not engage threaded base. I had to drill the AT3 mounting holes slightly deeper to get the screws provided by AT3 to securely engage base threads. Despite the mounting issues, I am very happy with the Burris base. Burris customer service was very good when I thought their base threads had stripped out, but the AT3 screws were just too short.

This is designed specifically for the Ruger (I used on Mk IV Competition) .22 LR pistol. It was easy to install and holds the optic firmly. I used Blue Loctite (reversible) when installing to keep the screws in place. I would buy this again if needed. No sight pusher or force is needed. It just slips in and the screws on the optic cinch everything up centered and tight. It does fit into the dovetail left behind after removing the original factory sight. The factory sight therefore is not still installed on the pistol after the optic is installed.

I recently bought this mount for my Vortex Venom, and it works great. Easy to install on my Mark III with a little red Loctite. Makes your sight sit nice and low, and shooting with this mount (versus the Picatinny rail mount) feels more natural to me at least. I was noticeably more accurate after installing my sight with this mount than before. Target acquisition is also faster because you can see the front sight. Got exactly what I wanted with this purchase.

I recently purchased a used Mark 3 Lite that had a Primary Arms Microdot Reflex sight (no longer manufactured) mounted on the top rail. I didn't like the cluttered look of the front and rear sights (unusable with the reflex sight mounted) and the rail. Also the reflex sight was very high and forward making target acquisition difficult and unnatural. The PA sight looked almost exactly like a Fastfire so I took my chances with this mount. It fits perfectly to the gun and the sight. The mount seems to be very good quality. The fit, finish and hardware are perfect. I removed the front and rear sights, and the top rail. Now the only thing on the top of the gun is the reflex sight on this mount. It's a nice clean look. Having the sight farther aft over the grip makes it much easier to find the dot and put it on target. I haven't put the mount through much abuse but it seems like it should hold up very well. The Mark 3 should't put much stress on the mount anyway since the upper is fixed (non-reciprocating).

I was torn when looking for a micro red dot for Mark III Hunter. I really liked this mounting base that was advertised for Fastfire only, but I preferred the Vortex Venom red dot. I couldn't find confirmation if this base would work with the Vortex, but I took a chance and I'm glad that I did. It was a quick and easy installation that didn't require any additional parts. Install took about 15 minutes and it looks 1000x better than the factory Ruger rail that came with the gun. So, if anyone is scouring the internet like I was, here's your confirmation! YES, this Burris Fastfire base fits the Vortex Venom sight perfectly on a Mark III!

Great item. A little tricky to install as I decided not to use the star washers on the 2 Torx screws. I found the star washers didn't fit inside the recessed screw holes well preventing the screws from reaching past their first couple of threads. That made it impossible to attach the optic to the mount. Removed the star washers and the optic secured to the mount with ease. Be sure to use some blue loc-tite to ensure the mount doesn't come loose. My Mark II looks great with this mount and a Fastfire 3. Sighted in at 25 yards, I didn't need to shim this mount or do anything other than make minor elevation and windage adjustments. I left my front sight on only because I feel the pistol looks better with it still on. The dot is above the front sight enough when aiming so it doesn't really get in the way. I'm glad I went with this mount, can't think of any other mount that's this secure and low in profile giving the pistol a clean look.

I fitted this on a ruger Mark III. Aftrer reading reviews it worked for a vortex venom I ordered this product to try that sight out. It does fit very well. Installation: This fits in place of the rear sight. The only hard part is that you have to punch the rear sight out and mine was in TIGHT, be careful you don't mar the finish like me with a slipped punch. Other than that it is so quick and easy. There can be some slight play untightened so really make sure you line up the sight just right before final tightening.

After way too much reading, I decided to grab the Burris mount and Reddit for my MK series Ruger. This mount is clever, the screws that go through the Burris Red dot drop through a hole in this mount and attach to a wedge that you place in the dovetail. (Clamping the assembly In place). Don’t worry, the bottom of the mount is curved to match the mk series receiver. It’s a very clean install. I’m very happy with the setup.

Sight mount worked awesome... no muss, no fuss...

As advertised. Great product