JK Armament JK155HPM 155 Hub Piston Mount

JK Armament JK155HPM Piston Mount System

The JK155HPM represents a modular approach to upgrading your AR-platform rifle with piston-driven reliability. This precision-engineered hub piston mount provides the foundation for converting your direct-impingement rifle to a more robust piston system.

Key Features

• Hub-style design allows flexible piston selection to match your specific rifle configuration
• Precision machining ensures reliable cycling and minimal wear on critical components
• Raw finish provides a clean slate for your build or allows natural patina development
• Direct AR compatibility integrates seamlessly with standard AR-15 upper receivers
• No piston included — select your preferred piston system separately for ultimate customization

What You're Getting

This is the mounting hub only. You'll need to source a compatible piston assembly separately, giving you complete control over your system's performance characteristics and cost.

Why Choose Piston Operation?

Piston-driven systems offer reduced fouling, cooler operation, and increased reliability in demanding conditions. The JK155HPM mount provides the quality foundation serious shooters expect for long-term performance.

Ideal For

• Shooters upgrading existing AR rifles
• Builders seeking modular piston conversion options
• Those prioritizing reliability and reduced maintenance