Red Dot Mounting Plate for for multiple sights on Ruger Security 9 and Security 9 Compact pistols

(1 customer review)


In stock


Lakeline Sight Mounting Plate
(2) 6-32 x 1/4 Button Head Screws
(2) 6-32 x 3/8 Flat Head Screws
(1) 8-32 x 5/16 Flat Head Screw

Fits the Ruger Security 9 and Security 9 compact.

Our Multi Red Dot sight mounting plates are machined from 7075 Aluminum alloy and hard anodized for high strength and light weight.   This fits the: Vortex Viper/Venom, Burris FastFire, Docter and other same footprint sights like the ADE Advanced Optics RD3-006A/B, other ADE RD3 series sights, Sightmark mini shot reflex, Truglo Tru Tec Micro.  In addition it fits sights with the Trijicon RMR style footprint, RMR sights plus Holosun, etc. 

It does not fit the micro sights, like the Shield RMSC footprint.

The sight plate is the same width as the RMR footprint sights and is wider than the Venom/Fastfire footprint sights.

The rear sight on your pistol is removed and replaced with this mounting plate in order to mount your red-dot sight. No modifications to the pistol are needed. The mount can be removed and the rear sight reinstalled at any time.   Mounting hardware for the red dot sight is included.

Our mounting plates are made slightly oversized so they are always a tight fit in the dovetail.  That makes installation a little harder, but that is also why our sight plates hold zero, not shifting around with use.  These sight plates also have precision machined bosses that engage the red dot sight and keep it from shifting around on the mounting plate.  A flat plate with a couple screw holes simply won’t hold zero under use on a pistol.  Those are features to look for in any quality sight mounting plate.

Gunsmith installation is recommended because fitting is required.  Particular care required when installing on the TX22 with its aluminum slide.  The TX22 is also sensitive to the mass on its slide and sometimes has feeding issues with heavier red dots.

Sold in the Continental U.S., Alaska, Hawaii, and Puerto Rico only.

WARNING: This product can expose you to chemicals which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to

Additional information

Weight 2.0 oz
Dimensions 7 × 1 × 5 in

1 review for Red Dot Mounting Plate for for multiple sights on Ruger Security 9 and Security 9 Compact pistols

  1. dmason628 (verified owner)

    Installation and fitment to the slide was spot on. Holosun 507c seats perfectly. However, after 30 rds of Wolf steel case, the forward pegs sheared off. This forced all of the stress onto the screws, causing the threads to get destroyed. Had to rethread the holes, and drill/insert/grind our own steel pegs to replace the lost originals. Cycled 50 rounds without issue after that.

  2. Al Lorenz

    Installation of the sight and mount plate are very critical. If the sight is allowed to loosen up and move, it will shear off the posts and screws. The sight needs to be tightened and torqued to specification and thread locker used. If that is not done, it will quickly loosen up and things will fail. There are tremendous accelerations/forces involved for things mounted on a pistol slide. If you install things carefully and correctly, they work great had have for thousands of customers.

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