The SilencerCo Threaded Barrel for the Glock 17L (brand part number AC861) is a direct-fit 9mm replacement barrel built for shooters adding a pistol suppressor to their long-slide Glock. Every pistol suppressor needs a threaded host barrel, and SilencerCo machines this one from 416R stainless steel and finishes it in black nitride for durability. The barrel measures 6.50 inches, is cut 1/2×28 with a right-hand 1:10-inch twist, and ships with a thread protector to keep the threads safe when no suppressor is mounted. A piston is required separately to complete a suppressor setup.

Key Specifications

• Direct-fit replacement barrel for the Glock 17L.
• Chambered in 9mm Luger.
• Threaded 1/2×28 for standard 9mm suppressor mounts.
• Measures 6.50 inches.
• Rifled with a 1:10-inch right-hand twist rate.
• Machined from 416R stainless steel for corrosion resistance.
• Finished in black nitride for a durable, low-glare coating.
• Ships with a thread protector to cap the threads when unsuppressed.
• Requires a separate piston to complete a suppressor host setup.

Frequently Asked Questions

Does this fit a standard Glock 17? No, it’s cut specifically for the long-slide Glock 17L.

What thread pattern does it use? 1/2×28, the standard for 9mm pistol suppressors.

Does it come with a piston? No, a piston is sold separately to complete your suppressor host setup.

Buy the SilencerCo 9mm Threaded Barrel for Glock 17L

Get your long-slide 17L ready to run suppressed with a factory-direct threaded barrel. Order it from our SilencerCo lineup, part of our Glock barrels selection, at our Lubbock, Texas gun shop — order now and we’ll ship it as soon as it’s available.