Action Army 6.03mm AEG Barrel 310mm Helmets and Accessories The selectable reticles are a

The selectable reticles are a bullseye

Quality construction

and a 14mm threaded outer barrel for muzzle brakes

4v 1300mAh PEQ Brick Lipo Battery

for use with its factory cylinder

Action Army 6.03mm AEG Barrel 310mm Helmets and Accessories The selectable reticles are aThe Action Army 6. 03mm AEG Barrel 310mm. Fits inside AEGs that require this length. This is a 6. 03 inner barrel diameter, so it allows for less jams and tolerances than the 6. 01mm. A very popular choice as an alternative to the Prometheus. One piece high grade metal machined. Precision smooth inner bore with nickel plating. This inner barrel is an upgrade to improve your gun's performance, accuracy, FPS, and range compared to stock gun barrels.