The Colt 1911 Optics Plate (brand part number SP301329) is a one-piece mounting base that lets 1911 owners add a red dot without a custom slide mill. Colt cuts the plate to the Shield RMSc/Holosun 507K footprint, one of the most widely supported micro red dot patterns on the market, and finishes it in black nitride to match a duty or carry-finished slide. It bolts directly to a factory-milled optics-ready 1911 slide, giving a clean, low-profile mounting surface for a red dot sight.

Key Specifications

• Purpose-built for 1911 pattern pistols.
• Cut to the Shield RMSc/Holosun 507K optic footprint.
• Finished in black nitride for corrosion resistance and a matched appearance.
• One-piece direct-mount base design for a low-profile fit.
• Features precision-machined construction.
• Includes an integrated Glock-style rear sight dovetail for co-witness capability.
• Ships with mounting screws included.
• Compact, low-profile design suited to concealed carry setups.

Frequently Asked Questions

What optics fit this plate? Optics that use the Shield RMSc or Holosun 507K footprint.

What pistol is this plate for? 1911 pattern pistols with a factory optics-ready slide cut.

What finish does it come in? Black nitride, for corrosion resistance and a matched appearance.

Buy the Colt 1911 Optics Plate, Shield RMSc/Holosun 507K Footprint, Black Nitride

Mount a micro red dot on your 1911 with a factory-fit Colt plate. Order it from our Colt lineup, part of our red dot mounts selection, at our Lubbock, Texas gun shop for fast, direct shipping.