Scalarworks SYNC/03 - Trijicon RMR mounts for Mossberg Shotguns - hero


Cutting Edge Trijicon RMR mount for Mossberg shotguns.

Enhance the effectiveness of your shotgun with the speed and precision of a red dot sight, while maintaining it's factory shooting ergonomics.

Perfect Placement

Puts your Trijicon RMR in the ideal shooting position.

Scalarworks Sync/03 Trijicon RMR mount for Mossberg Shotguns - co-witness
Scalarworks SYNC Trijicon RMR Mount (Mossberg 590A1)


The Sync's proprietary internal Key-Slot mounting system spreads side impacts across 4 anchor points.

Patent Pending.

7075-T6 vs 6061-T6

Every Sync is CNC milled from 7075-T6 billet, which has vastly superior mechanical properties to 6061-T6, and is used where ultimate strength and durability outweigh cost considerations.

Scalarworks SYNC/03 - Trijicon RMR mount for Mossberg Shotguns - lightweight


Meticulously machined to be the lightest optic mounting solution for Mossberg shotguns, without compromising an ounce of strength.

Scalarworks® Sync SW1300 (0.64oz)
Mossberg® 590A1 rail + Trijicon® RM33 Low Mount (2.71oz)

All Trademarks are the property of their respective owners and used in accordance with FTC Comparative Advertising guidelines. All parts weighed under the same conditions including rail screws.


Scalarworks SYNC/03 - Trijicon RMR mount for Mossberg Shotguns - water tight

The SYNC/03 features a water-tight mounting platform that doesn't require a sealing plate.


Worry-free, properly torqued and threadlocked, optic bundles.


(25 customer reviews)


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25 reviews for SYNC/03

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  1. Cory (verified owner)

    These mounts are extremely well designed and executed, there is nothing better.

    (0) (0)
  2. Jonathan (verified owner)

    Very well designed. I don’t make a living kicking in doors, but I do enjoy turkey hunting, so the mount fit perfectly on my Mossberg 500, 20 gauge. No reason to drag out the old 3.5 inch Ulti-Mag since the advent of TSS turkey loads. Note, the screws provided for the mount are for post 1997 guns with a #8-40 screw, so I had to find some #6-48 flat head gun screws for my pre ‘97, but the mounting holes lined up perfect and everything fit great!

    (0) (0)
  3. Anonymous (verified owner)

    Great fit on top of my Mossberg 590! Clean. Sleek. Simple. Strong. Easily mounted to the weapon and worked with the Holosun HE508T-RD red dot that has the same footprint as Trijicon.

    (2) (0)
  4. Matt (verified owner)

    Everything fit just fine. No problem at all installing it.

    (0) (0)
  5. Joshua Swift (verified owner)

    AWESOME product!!! Meticulously crafted and easy to install! Couldn’t be any better and I couldn’t be happier!!

    (0) (0)