SIG SAUER Factory MCX Virtus Piston Assembly – 16″ Barrel | 300 Blackout
Not Yet Rated | Write the First Review SKU: 222-SIG-KIT-MCX-PISTON-16B-300
UPC: 799000000000
MFG#: KIT-MCX-PISTON-16B-300

SIG SAUER Factory MCX Virtus Piston Assembly – 16″ Barrel | 300 Blackout (300BLK)

Factory Precision for Long-Stroke Reliability in Suppressed & Unsuppressed Builds

Keep your SIG MCX Virtus 300BLK 16″ rifle running flawlessly with the SIG SAUER Factory Piston Assembly—a factory-original, drop-in replacement engineered specifically for 16″ barrel configurations in .300 AAC Blackout. Designed for smooth gas operation and long-life reliability, this short-stroke gas piston system delivers cleaner cycling, improved recoil control, and consistent function in suppressed or unsuppressed setups.

Whether you're maintaining your Virtus for professional use, competition, or hard-duty range time, this piston assembly ensures factory-level performance with no compromises.

🔧 Key Features:

• ✅ Genuine SIG SAUER OEM Part – Manufactured to exact specs for MCX Virtus rifles with 16" .300 Blackout barrels.

• 🎯 Optimized for 16″ Barrels – Engineered to match the dwell time and gas pressure of full-length 300BLK setups.

• 🔇 Suppressor-Ready – Performs reliably with both subsonic and supersonic loads, suppressed or unsuppressed.

• 🧱 Heavy-Duty Construction – Machined steel piston and components built to withstand heat and carbon fouling.

• 🔁 Drop-In Compatibility – Designed to restore or maintain peak performance in MCX Virtus 300BLK rifles.

What's Included:

• Complete Piston Assembly
  (for 16” MCX Virtus rifles chambered in 300BLK)

This kit is designed for use as a complete replacement and must be installed as a full unit.

Compatibility & Specs:

⚠️ Safety & Installation Warning:

Installation requires full upper disassembly and should only be performed by certified SIG Sauer armorers. Improper installation or part substitution may result in malfunction, serious injury, or death. Warranty coverage does not apply to damage from unauthorized installation.