CGS Suppressors Nautilus Piston M16x1 LH Black Nitride 17-4 Stainless Steel

The CGS Suppressors Nautilus Piston M16x1 LH is a replacement piston component engineered for shooters running CGS suppressor systems that use left-hand threaded muzzle attachments. Built from 17-4 stainless steel and finished in black nitride, this piston handles the mechanical demands of suppressor operation—cycling gas and maintaining the seal between your barrel and suppressor tube. If you're deep into a suppressed rifle build or maintaining an existing CGS setup, having the correct piston spec on hand keeps your system reliable and ensures proper fit and function downrange.

Pistons are a wear item in suppressed systems; over time and rounds, they can become fouled or damaged by carbon buildup and repeated cycling. The M16x1 LH specification tells you this piston threads onto barrels with an M16x1 left-hand pitch—a common configuration on many modern rifle platforms. Black nitride plating resists corrosion and is easy to clean, a practical advantage when you're shooting suppressed and dealing with increased carbon and fouling.

This is a component for the technically inclined: you need to confirm your barrel's thread pitch and handedness before ordering. If you're replacing a worn piston or upgrading from original equipment, CGS parts ensure you're maintaining the integrity of your sound suppression system. Pair this with a Nautilus can and you've got a matched, proven suppressor solution.

Key Features

• M16x1 left-hand thread pitch for compatible CGS Nautilus suppressor systems
• 17-4 stainless steel construction for durability and corrosion resistance
• Black nitride finish resists carbon fouling and simplifies cleaning
• Replacement component for maintenance and upgrades of suppressed rifle builds

Specifications

Frequently Asked Questions

What barrel thread pitch does this piston fit?

This piston is designed for barrels with an M16x1 left-hand thread pitch. Verify your barrel's threading before purchase to ensure compatibility with your CGS suppressor system.

Is this piston compatible with all CGS suppressors?

This piston is for CGS Nautilus suppressor systems using M16x1 LH muzzle attachments. Compatibility depends on your specific suppressor model and barrel configuration; confirm your setup matches before ordering.

Why would I need to replace the piston?

Pistons are wear items that experience repeated cycling and carbon buildup in suppressed systems. Over time, they may become fouled or damaged and require replacement to maintain proper function and seal integrity.

What does the black nitride finish do?

Black nitride plating resists corrosion and fouling, making the piston easier to clean and maintain—a practical benefit when running a suppressed rifle and dealing with increased carbon deposits.