The SilencerCo Piston in M13.5×1 left-hand thread (SilencerCo part no. AC26) is the mounting piece for the Osprey and Octane family of suppressors on a barrel cut to that thread. These pistons are easily changed for different host weapons or subcalibers. It is made from 17-4 stainless steel and heat treated for durability, and it is the part of the Nielsen device that moves so a semi-automatic pistol can cycle. Its female threads screw onto the host muzzle. This M13.5×1 LH version is listed for 9mm hosts.

Key Specifications

• The thread is M13.5×1 left-hand, which has to match the host barrel.
• The material is 17-4 stainless steel, a strong, corrosion-resistant alloy.
• It is heat treated for maximum durability.
• It is the moving part of the Nielsen device, which lets the pistol cycle semi-automatically.
• Female threads let it attach to the threaded muzzle of the host pistol.
• It is made for the Osprey and Octane suppressor families.
• The thread is listed for 9mm hosts.

Frequently Asked Questions

What is the M13.5×1 LH piston for? It mounts an Osprey or Octane suppressor to a pistol with a barrel threaded M13.5×1 left-hand.

Can the pistons be changed? Yes. The Osprey and Octane family of suppressors have pistons that are easily changed for different host weapons or subcalibers.

Which caliber is this thread listed for? 9mm.

Buy the SilencerCo Piston, M13.5×1 Left-Hand Thread

Matching the piston thread to the barrel is the whole job, and this M13.5×1 left-hand version handles it for 9mm hosts. Order it from our Lubbock, Texas gun shop for fast, insured shipping, and browse more suppressor parts and accessories while you are here.