The Griffin Armament Gap365XLTB P365XL 9mm 1/2x28 Bundle is a purpose-built threaded barrel package for shooters who want to add suppressor or muzzle device capability to their Sig Sauer P365 XL. Precision machined from stainless steel and finished in a durable black nitride, this 4 inch barrel is designed to deliver consistent accuracy and reliable lockup in a compact carry pistol.

This model features a 1/2x28 threaded muzzle to accept common 9mm accessories and includes a thread protector to keep the threads safe when no device is installed. With a 1:10 twist rate optimized for standard 9mm Luger loads, it is well suited for range use, training, and everyday carry setups where enhanced versatility is desired. Griffin Armament’s attention to detail and machining quality is evident throughout the design, reflecting the company’s reputation for thoughtful engineering and dependable performance.

Key Features:

• Manufacturer: Griffin Armament
• Model: GAP365XLTB P365XL 9mm 1/2x28 Bundle
• Caliber: 9mm Luger (9x19 Parabellum)
• Barrel Length: 4 inches
• Threaded Barrel: 1/2x28 thread pattern with included thread protector
• Twist Rate: 1:10
• Firearm Fit: Sig Sauer P365 XL
• Barrel Material: Stainless steel
• Barrel Finish: Black nitride
• Weight: 8 oz