OR3GUN Sight Saddle for Mossberg® Shotguns
The OR3GUN Sight Saddle (SS-MOSS) system for Mossberg shotguns
allows you utilize any Glock® format front sight as your shotgun's front sight. For the
vent-rib equipped application, a coordinated
rear sight is included. For round barrels, our Front Sight Saddle w/ RBA adapter is the one you will want.
Our Sight Saddle - Optic
(SS-OPTIC) allows low-profile, direct to receiver mounting of popular Vortex, Burris, Shield, Leupold, SIG, Crimson Trace
and Holosun micro red-dot sights to most Mossberg shotguns.
Natural Habitat
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Application
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Compatibility
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Features
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Color
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Price
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Status
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ORDER
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Front/Rear w/ ShimsGun SportsHunting
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All Vent-Rib Equipped US Mossberg 12/20 Gauge Shotguns
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Anodized (For Durability)Includes Shims (For Elevation)
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OR3GUN Pitch Black
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$45.95
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Low Stock
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Front w/ Round Barrel AdapterGun SportsHunting
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All Heavy Round Barreled US Mossberg 12 Gauge Shotguns
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Includes FRONT Sight Saddlew/ Radiused Shim
(for Mossbergs)
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OR3GUN Pitch Black
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$22.95
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In Stock
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Sight Saddle Optic (FF3)Gun SportsHunting
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Burris FastFire 2 Burris FastFire 3 Vortex Venom Vortex Viper(Requires 6-32 Screws)
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Requires Micro Red-Dot (See List)Includes 8-40 Screws (Receiver Mount)
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OR3GUN Pitch Black
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$39.95
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In Stock
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Sight Saddle Optic (RMR)Gun SportsHunting
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Trijicon RMR Trijicon SRO Holosun HS407C Holosun HS507C Holosun HS508T(Requires 6-32 Screws)
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Requires Micro Red-Dot (See List)Includes 8-40 Screws (Receiver Mount)
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OR3GUN Pitch Black
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$39.95
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Low Stock
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Sight Saddle Optic (SMS)Gun SportsHunting
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Shield RMS Shield RMSc Shield RMSw Shield SMS SIG Romeo Zero Leupold DeltaPoint Pro Crimson Trace CTS-1550 Holosun HS407k Holosun HS507k(Requires 6-32 Screws)
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Requires Micro Red-Dot (See List)Includes 8-40 Screws (Receiver Mount)
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OR3GUN Pitch Black
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$39.95
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Low Stock
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Sight Saddle Optic (SMS)Gun SportsHunting
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Shield RMS Shield RMSc Shield RMSw Shield SMS SIG Romeo Zero Leupold DeltaPoint Pro Crimson Trace CTS-1550 Holosun HS407k Holosun HS507k(Requires 6-32 Screws)
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Requires Micro Red-Dot (See List)Includes 8-40 Screws (Receiver Mount)
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Anodized OR3GUN Damp Earth
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$42.95
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In Stock
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There is no a shortage of sights on the market for shotguns, but many of the most innovative
sight designs are only available for pistols. Sights suitable for a match with both daylight and night elements are even
slimmer pickings. It didn't require the OR3GUN Project to look beyond our own pistols for a simple solution.
We set out to mount a Glock front sight to a Mossberg vent rib and match it to a specially designed rear
sight. Mission accomplished.
While most of the OR3GUN team does run a Glock in competition, our sight choice was supported by analyzing the sheer number
of options available for the platform. The vast
majority of aftermarket Glock sights are available in the same .165" height as OEM. With our team shooting a few night
matches each year, we wanted to be able to utilize night sights on our competition 930s without losing our daytime zero.
We also wanted our sights hard-set to minimize the risk of the sights working their way out of adjustment.
Glock sight equipped Sight Saddles (such as those shown below) can allow quick changes of fiber optic rods or
feature tritium (night sight) and dayglow (or glow-in-the-dark) elements within the same sight. While there may be
individual shotgun sights out there with some of these features, ours operate as a system that shares the
same zero.
With our Sight Saddles, you can have a whole variety of front sights ready to easily change for the conditions of a given
match, without having to worry about your zero changing too.
Once we had developed the Sight Saddle System for your vent rib, we turned our focus to getting
the most popular micro red-dot optics
mounted to the receiver for open division guns, hunters and those with vision issues making a
red-dot the best choice
for their shotgun.
The Sight Saddle - Optic is a sleek way to mount a micro red-dot from Vortex (Venom/Viper),
Burris (Fast Fire Series) or Trijicon (RMR/SRO) to your Mossberg shotgun.
As most Mossberg 500/590 and 930/935/940 series shotguns manufactured since the mid 1990s feature an 8-40 tapped receiver,
the Sight Saddle Optic is the lowest profile, most efficient approach to mounting these optics in a position that gives a
wide field of view and requires the least amount of rise adjustment to your stock. While there are receiver to stock
optic mounts
for other shotguns, the Mossberg's tang safety has left most companies to ignore the Mossberg when it comes to optic mounts.
Until now, the only official option has been a receiver rail and factory rail mount. These are considerably higher in
profile and compound the cost for guns without an existing rail. All Sight Saddle Optic mounts sold after January 2022 will
feature 6-32 threads for securing your optic. While your optic's supplied screws may vary from this, the common 6-32
format greatly simplifies
finding the exact length and style needed for your specific application at most hardware stores.
The Front Sight Saddle with Round Barrel Adapter is designed for heavy barreled Mossberg 12 Gauges with a standard factory
bead. This options allows those without a vent rib to utilize a Glock front sight on the 12 Gauge, US built Mossberg shotgun.
One of the ways the OR3GUN team has found to utilize the Rear Sight Saddle in night competition is with a strip of industrial
grade photoluminescent (glow in the dark) tape coupled with our favorite Ameriglo ProGlo (photoluminescent/tritium) front
sight. A two second charge with a flashlight keeps it well lit for the entire stage and usable for over an hour. If there
are delays, the tritium will continue to glow, leaving a standard night sight at front.
Complete Front/Rear Sight Saddle sets now include a strip of this high-strength, wear resistant, photoluminescent tape.
Your Glock compatible front sight (not included) is secured using a standard Glock sight tool (also not included).
The entire front Sight Saddle mounts to the
existing threaded front bead hole using the included 5-40 screw. While shipped to be spot-on with most 930 competition guns,
two shims are included with our full set, allowing for elevation correction when one or both
shims are used under the front or rear sight. The rear Sight Saddle can be mounted in the mid-bead position (using
factory 5-40 threads) or you may drill (# 38) and tap (5-40) your vent rib to mount it further back.
The OR3GUN Sight Saddle is precision machined from 6061 T6 alloy.
Each Sight Saddle includes a black 5-40 screw that will secure the adapter to your existing threaded bead holes. The
Sight Saddle is de-horned and de-burred to a matte finish, then anodized in OR3GUN's Pitch Black to blend in nicely
with the rest of your gun. The front Sight Saddle can be used alone,
with factory Mossberg adjustable rear (turkey) sights or OR3GUN's own rear sight.
The installed set (when using a standard Glock 0.165" height) corrects the range of adjustment typically
needed to zero for 50 yard slug impact with both shims up front. Aftermarket 0.220" competition Glock format sights up front
will usually require no shims at all for a 50 yard slug impact using Fiocchi 1 Oz Low-Recoil slugs.
Check out our new Sight Saddle YouTube video, detailing advantages of the system for the Mossberg platform.
Due to the maze of ITAR and export regulations on firearm parts, those on this page are not currently for sale
outside of the United States. We have begun selling specific combinations of our parts to customers in Canada,
Germany and the United Kingdom. If you reside in one of these countries, please make your purchase from our
International page only. International orders generated from elsewhere
will be cancelled.
Mossberg®, 930 and 935 are trademarks of O.F. Mossberg & Sons, Inc. All rights reserved.
Glock®, is a trademark of GLOCK, Inc. All rights reserved.
OR3GUN and The OR3GUN Project are trademarks of Logistix Productions, Inc. All rights reserved.
Specifications are subject to change without notice.