This piston is the first NGRS M4 piston with a technopolymer body reinforced with carbon fiber and all metal teeth 100% Made in Italy.

• The loaded technopolymer assures great mechanical resistance, light weight and great smoothness due to the carbon fiber filler.
• The rack was manufactured through the use of MIM (Metal Injection Molding) technology, guaranteeing dimensional accuracy and sturdiness equal to that of solid machining.
• The type of metal injected is SAE 4650 which is currently considered the best material on the market for this type of use.
• The sliding guides are designed to minimize friction and hold lubricant for a long period of time.

Compatible with: Tokyo Marui Next Generation Recoil Shock M4 & HK416/HK417 series