SilencerCo Piston M13.5x1LH 9mm — Osprey/Octane

Description

The SilencerCo piston M13.5x1LH is a replacement piston intended for the Osprey and Octane suppressor families. Constructed from 17-4 stainless steel and heat-treated, the piston provides the female threading that attaches the suppressor to a threaded host barrel for 9mm use. The piston is part of the Nielsen device that moves to allow semi-automatic cycling on compatible host pistols.

Key Specifications

• The piston is made from 17-4 stainless steel and is heat-treated for durability.
• Designed to fit the Osprey/Octane suppressor family.
• Intended for 9mm caliber host firearms.
• Features a female thread pattern of M13.5×1 LH.
• The product type is listed as Silencer Piston.
• The NFA thread pattern is recorded as 13.5x1mm LH.
• The series is identified as Piston 13.5M x 1LH.
• Threads are recorded as 13.5Mx1LH.

When serviceability or caliber changes require it, this piston provides an easy-to-swap threaded interface so a single SilencerCo suppressor can be adapted to compatible 9mm hosts. Its stainless construction and heat treatment are intended to stand up to repeated installation and use while preserving reliable function of the Nielsen device.