Silencer Co AC861 Threaded Barrel | Glock 17L | 9mm

The Silencer Co AC861 is a threaded replacement barrel designed for Glock 17L pistols and chambered for 9mm Luger. It is manufactured from 416R stainless steel with a black nitride finish and ships with a thread protector. This barrel uses a 1/2×28 right-hand thread pattern and is intended for use with a piston when mounting a suppressor.

Typical applications include use with suppressors for reduced report during range sessions and precision/competition shooting where an extended/threaded barrel is allowed by rules. It is also suitable for firearm enthusiasts seeking a threaded factory-style replacement for Glock 17L platforms.

Product Specifications

• The UPC is 817272012033.
• The manufacturer is Silencer Co.
• The manufacturer part number is AC861.
• The barrel fits Glock 17L pistols.
• The caliber is listed as 9mm Luger.
• The thread pattern is 1/2×28 RH.
• The material is 416R Stainless Steel.
• The finish is Black Nitride.
• The product includes a thread protector.
• The listed rate of twist is 1:10″ RH as provided in product data.
• The NFA thread pattern is specified as 1/2×28.
• The barrel is described as threaded and constructed using 416R SS.
• The product is noted as compatible with Gen3/Gen4 Glocks in the supplied attributes.
• The cartridge is specified as 9mm.

This threaded replacement barrel provides a factory-style upgrade path for Glock 17L owners who need a robust, threaded solution for use with pistons and suppressors. Its stainless construction and nitride finish deliver corrosion resistance and durable service life in regular range and competition use.