CoSight Optic Adapter w/ Integrated Backup Sight Mounts

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  • $70.00
  • Regular price $129.00
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CoSight is a low-profile RMR-cut optics adapter for Mossberg shotguns with drilled and tapped receivers.  What makes CoSight unique is that it integrates G17-type Glock-compatible handgun sight mounts into a 1-piece adapter system to provide Back Up Iron Sight (BUIS) and co-witnessing capabilities.

Weighing only 2.5 oz, the Cosight adapter is machined from solid 304 billet stainless steel and is finished in an Armor Black Cerakote coating.  Weight reduction pockets have been machined into the underside of the adapter to achieve its light weight, while the stainless steel body provides maximum strength around the optic mounting threads and rear dovetail mount.

Utilizing the array of G17-type Glock-compatible handgun sights on the market, users can choose various sight types from plain black to white-dot to tritium night sights.  Users can also select the height of their sights for different co-witnessing schemes.  CoSight has been designed so that standard height Glock-compatible sights co-witness lower 1/4 with most optics, providing the largest clear field of view possible.  However the user can choose lower 1/3 or absolute co-witnessing by choosing an appropriate, taller (suppressor height) sight.

Co-Sight's mounting design ensures the only contacts points with your firearm are along the machined, grooved area on top of the receiver, which locks the adapter into place.  Even though it is contoured to follow the profile of the receiver, CoSight does not contact the face of the receiver and will not mar your firearm's finish like designs that contact the face when mounted.

Fits the following Mossberg drilled and tapped shotguns - 500, 505, 510, 590, 590A1, 535, 835, 930, 935, 940.

Like all our products, CoSight comes with the Defender Tactical Lifetime Warranty. 


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