These pistons were designed to be easily changed for different host firearms or calibers. Pistons are built with 17?4 stainless steel then heat-treated for maximum durability. The piston is part of the Nielson device that moves and allows semi-automatic cycling for unlocking pistol barrels. Throw a Fixed Barrel Spacer on for fixed barrel applications. SilencerCo pistons have female threading that attaches to SilencerCo threaded barrels.

XL pistons are for firearms where the silencer requires additional length between the threaded barrel and the silencer.

UPC	817272010169
Manufacturer	SilencerCo
Manufacturer Part Number	AC26
Finish	Stainless
Material	Stainless Steel
Model	Osprey/Octane
Size	9mm
Thread Pattern	M13.5×1 LH tpi
Product Type	Silencer Piston
Subcategory	Suppressor Accessories
Fit	Osprey/Octane
Description	M13.5X1LH
Height	1
Additional Feature 2	Thread for Sig,HK,Walther
Additional Feature 3	Glock Factory Thread Barrel
Adjustable Objective	No
Caliber/Gauge	9mm
Drilled and Tapped	No
Illuminated Reticle	No
Length	2
Shipping Weight	0.1
Width	1
NFA Thread Pattern	13.5x1mm LH
Package Height	1.0
Package Length	2.0
Package Width	1.0
Scope Cover Included	No
Additional Feature 1	9mm Piston For Osprey/Octane