G&G SR-25 Spacer for M4 Chamber Conversion Hoodie There is also 10-32 set

There is also 10-32 set screw incorporated into the design which is tightened against the underside of the buffer tube for anti-rotation thus keeping your stock indexed correctly and rock solid

Num Most Commonly Used With Tip (Inches) 1

not all manufacturers designed their rifle models to the exact same specifications

0 (Buna 70) - Rear Poppet

This valve is specifically made for the PolarStar Fusion Engine and has higher wattage coils and tighter seals than an off-the-shelf MAC 33A valve

G&G SR-25 Spacer for M4 Chamber Conversion Hoodie There is also 10-32 setThis delrin spacer allows the G&G SR 25 (GR25) to be used with traditional M4 series hop up chambers in place of the original proprietary chamber. Only compatible with the Fusion Engine.