The Cross Armory RMSc Dovetail Mount Adapter in black (Cross Armory part no. CRDVADAPTER) replaces your Glock’s factory rear sight dovetail with a low-profile RMSc optic mounting platform. Cross Armory precision-machines this adapter from 17-4 stainless steel and finishes it in a durable black nitride coating built to handle recoil and daily carry wear. A bright green fiber-optic front sight is built into the package for a true co-witness sight picture under your red dot. The adapter is designed for OEM, non-MOS Glock dovetails, covering models 17, 19, 19X, 20, 21, 22, 23, 24, 26, 27, 29, 30, 30SF, 34, 36, 42, 43, 43X, and 45 — it does not fit the Glock 44. The optic itself is sold separately.

Key Specifications

• Machined from 17-4 stainless steel for a durable, precision-fit mounting platform.
• Black nitride finish resists corrosion and wear better than a standard bead-blast finish.
• Low-profile RMSc footprint mounts a compact red dot directly to the slide’s rear dovetail.
• Includes a bright green fiber-optic front sight for a true co-witness picture with the mounted optic.
• Single-piece, precision-machined construction combines the mount and front sight into one unit.
• Compatible with OEM, non-MOS dovetails on Glock 17, 19, 19X, 20, 21, 22, 23, 24, 26, 27, 29, 30, 30SF, 34, 36, 42, 43, 43X, and 45.
• Does not fit the Glock 44 — confirm your model before ordering.

Frequently Asked Questions

Does this include the red dot optic? No — the adapter provides the RMSc mounting platform and co-witness front sight; the optic is sold separately.

Will this fit my Glock 44? No — the adapter is not compatible with the Glock 44.

What front sight comes with the adapter? A bright green fiber-optic front sight is built in for a true co-witness sight picture with your mounted optic.

Buy the Cross Armory RMSc Dovetail Mount Adapter

Upgrade your Glock’s factory sights to a true RMSc co-witness setup with the Cross Armory Dovetail Mount Adapter. Browse more optics accessories or order this adapter from our Lubbock, Texas gun shop for fast, insured direct shipping.