Fits for WA M4 GBB （Original Receiver Hole needs Bore up）

Fits for WE M4 GBB

Fits for KJ M4 GBB

The Pin Set fits for Real AR-15 & WA/WE/KJ M4 GBB Series

Color: Black, P-Process technology
Material: Steel
Thermal Treatment: 40° HRC

Item No.: AR-19
Suggested Retail Price: USD 12.00