The Griffin Armament direct thread piston in M13.5×1 left-hand is a legacy-style piston for Griffin pistol suppressors. Griffin lists these pistons for the Revolution, Resistance, Optimus 9mm and Bushwhacker 46 in pistol configurations. This version carries the M13.5×1 left-hand thread, which Griffin lists among its direct thread piston options. It is made from 17-4 stainless steel and H900 heat treated for wear resistance. Griffin notes the exterior and the booster housing interior should be cleaned and lubricated.

Key Specifications

• The thread is M13.5×1 left-hand, a metric pattern that must match the barrel.
• It is a direct thread piston, for owners who prefer the legacy design to CAM-LOK or EZ-LOK.
• The material is 17-4 stainless steel, which resists wear in a part that cycles with every shot.
• The piston is H900 heat treated with a rust inhibitor applied.
• Griffin lists the line for Revolution, Resistance, Optimus 9mm and Bushwhacker 46 pistol configurations.

Frequently Asked Questions

Which suppressors use this piston? Griffin lists its direct thread pistons for the Revolution, Resistance, Optimus 9mm and Bushwhacker 46 in pistol configurations.

What thread is this? It is M13.5×1 left-hand. Griffin also lists direct thread pistons in .578×28, 1/2×28, 16×1 left-hand and 16×1 right-hand.

How should I maintain it? Griffin says to clean and lubricate the piston exterior and booster housing interior and to replace worn O-rings.

Buy the Griffin Armament Direct Thread Piston, M13.5×1 LH

Direct thread pistons are the simple, proven way to mount a Griffin pistol suppressor, and this version covers the M13.5×1 left-hand barrel thread. Order it with the rest of Griffin’s lineup in our Class 3 parts and accessories from our Lubbock, Texas gun shop for fast, insured shipping.