G&P Aluminum M4A1 Outer Barrel for G&P Front Set / RAS Series AEG (14mm CW, 10.5" / 11.5" / 14.5")

G&P Aluminum M4A1 Outer Barrel for G&P Front Set / RAS Series AEG (14mm CW, 10.5" / 11.5" / 14.5") Aluminum Construction 14mm Clockwise Thread Fit for G&P Front Set / RAS series to install with Marui Length: S:10.5" / M:11.5" / L:14.5"