SilencerCo Piston AC1756 | 1/2×28 | Stainless

SilencerCo AC1756 Piston is a removable Nielsen-style piston designed for use with SilencerCo Osprey and Octane series suppressors. It provides the female 1/2×28 interface required to attach a suppressor to compatible pistol barrels and allows the Nielsen device to move for semi-automatic cycling. The piston is constructed from 17-4 stainless steel and is heat-treated for increased durability. This soft-shoulder, muzzle-indexing piston is intended for small-profile pistol barrels that lack a substantial shoulder.

Typical applications include range training with a suppressed pistol and configuring a multi-host, multi-caliber suppressor setup for competition or precision practice.

Product Specifications

• The manufacturer is Silencer Co.
• The model is Piston.
• The manufacturer part number is AC1756.
• The thread pattern is 1/2×28.
• The material is Stainless Steel.
• The finish is Stainless.
• The piston fits Osprey/Octane suppressor series.
• The product is specified for 9mm caliber in the supplied attributes.
• The series is AC1756.
• The size designation is 1/2X28.
• The piston uses a soft-shoulder design and will index on the muzzle for small-profile barrels.
• The part is constructed from 17-4 stainless steel and is heat-treated for durability.
• Compatibility notes list Glock 43, M&P Shield, and Sig P938 as supported hosts for this piston configuration.
• Additional feature: 9mm piston for Osprey/Octane multi-caliber capability.
• The UPC for this product is 817272018363.

This piston provides a straightforward, durable solution for adapting SilencerCo Osprey and Octane suppressors to 1/2×28 pistol barrels. Its heat-treated 17-4 stainless construction and muzzle-indexing soft-shoulder design make it well suited for repeated use during range sessions and for configuring a multi-host suppressor setup.