Colt 1911 Optic Plate | RMSc Footprint | SP301329

The Colt 1911 Optics Plate (SP301329) is a precision-machined adapter designed to mount Shield RMSc and Holosun 507k footprint red dot sights to Colt 1911 pistols. Constructed from aluminum and finished in black per product information, the plate incorporates an integrated Glock-style rear sight dovetail to aid sight alignment while keeping the optic installation low-profile. This plate supports compact optics commonly used on concealed-carry and competition/target-shooting configurations where a slim, secure mount is required.

Product Specifications

• The plate fits 1911 pistols.
• The mount type is Shield RMSc/Holosun 507k Footprint for compatible RMSc-style red dots.
• The material is ALUMINUM.
• The finish is reported as Black Matte in some sources and Black Nitride in others; see notes.
• The color is listed as Black.
• Rings included: No.
• The product type is a 1 Piece Base.
• The overall dimensions are 0.85 X 2.90 X 6.60.
• The height is 0.8500.
• The width is 2.9000.
• The length is 6.6000.
• The weight is 0.11.
• The application is listed as COLT.
• The UPC is 098289600431.

This plate provides a straightforward path to modernize a Colt 1911 with compact red-dot optics while retaining a low sight profile and secure mounting. It is appropriate for concealed-carry setups that require minimal optic height and for competitive or precision target work where a repeatable, rigid mounting surface is important.