Nightfall Custom 507K/407K to Springfield Hellcat Optic Adapter Plate

The Nightfall Custom SPR-OP-507K-HELLCAT adapter plate enables direct mounting of Holosun 507K and 407K red dot sights to Springfield Hellcat pistols. This precision-machined adapter eliminates the need for aftermarket slide cuts while maintaining proper sight height and co-witness alignment.

What Makes This Different

Unlike universal mounting solutions that require permanent slide modifications, this dedicated adapter plate provides a reversible mounting option specifically engineered for the Hellcat's slide geometry. The plate maintains the pistol's original profile while positioning the optic at the optimal height for iron sight co-witness. Precision tolerances ensure zero shift during installation and sustained accuracy through thousands of rounds.

Key Features

• Direct compatibility with Holosun 507K and 407K compact red dot sights
• Machined from 6061-T6 aluminum with Type III hard anodizing
• Maintains 1/3 lower co-witness with factory iron sights
• Includes stainless steel mounting hardware with thread locker
• Zero-gap fit eliminates moisture intrusion and debris accumulation
• Reversible installation preserves original slide configuration
• 0.125-inch thickness adds minimal height to slide profile

Field testing demonstrates consistent zero retention through rapid-fire strings and environmental exposure. The adapter's low-profile design maintains the Hellcat's concealability advantage while adding red dot capability for faster target acquisition. Competition shooters report improved split times, while duty users appreciate the enhanced accuracy in low-light conditions. The anodized finish resists wear from holster draw cycles and environmental exposure.

Technical Specs

• Material: 6061-T6 aluminum with Type III hard anodizing
• Thickness: 0.125 inches
• Weight: 0.3 ounces
• Compatible optics: Holosun 507K, 407K series
• Compatible pistol: Springfield Hellcat (all variants)
• Mounting hardware: Stainless steel screws with thread locker
• Finish: Matte black anodized
• Country of origin: USA

This adapter plate transforms the Hellcat into a red dot-ready platform without permanent modifications. Professional installation recommended for optimal performance and warranty compliance.