- 5KU M4 M16 Series AEG Light Weight Outer Barrel (Carbine Length, CCW) - Full Metal Constructed. - One-Piece barrel construction. - Suitable for M4 M16 Series Airsoft Electric Gun AEG Rifle. - Barrel tip end has Counter-Clockwise 14mm (Negative) thread. - Weight - Approx 185g - Length - Approx 365mm(14.25" Inches) - Adaptive End - 14mm Counter-Clockwise - Original Packing - Original Packing