The Geissele Automatics GDP is a compact, semi-automatic pistol chambered in 5.56 NATO, built around an 8-inch M-LOK equipped barrel and black finish. It ships with a GDP pistol brace and a HUXWRX flash hider, and is configured for short-barrel, maneuverable use where legal. This model is supplied without a magazine.
Key Specifications
- The manufacturer is Geissele Automatics.
- The model is listed as GDP.
- The caliber is 5.56 NATO.
- The barrel length is 8 inches.
- The handguard configuration is M-LOK.
- The finish is black.
- The muzzle device is a HUXWRX flash hider.
- This pistol ships with a GDP pistol brace.
- The product listing notes magazine not included.
- The manufacturer part number is 08-427B.
Purpose-built for compact handling and straightforward operation, the Geissele GDP 5.56 NATO 8″ M-LOK pistol offers a precise specification set for range use, training, and other lawful applications. Its combination of an 8-inch M-LOK barrel, proven muzzle device, and factory brace provides a versatile platform for shooters who prioritize control and quality components. Review local and federal regulations to ensure lawful ownership and use in your area.
Product information is supplied by the manufacturer and/or distributor and may be automatically formatted or enhanced using AI for clarity and consistency. While we strive for accuracy, specifications, features, and included items may change without notice. Always verify details using the manufacturer’s official documentation and the information shown on this product page before purchase or use.




