The SureFire HUBFA762BK is a 7.62mm suppressor muzzle adapter featuring a 1 3/8"x24 thread pattern. This adapter allows for the easy conversion of HUB suppressors and accessories to a quick detach (QD) system for use with SureFire SOCOM Fast-Attach muzzle devices. The Fast-Attach Hub is precision-machined for proper fit with SOCOM muzzle devices, ensuring compatibility and functionality.Key FeaturesThread Pattern: Designed with a 1 3/8"x24 thread pattern for compatibility with HUB suppressors.Durable Construction: Made from heat-treated 17-4 stainless steel and coated with black nitride for enhanced durability.Length: The adapter measures 2 inches in length.