Action Army 6.03mm AEG Barrel 540mm Military & Government Airsoft Training Guns The hop up is fully

The hop up is fully adjustable

Discharge to a safe level 3

Includes one each: spur

this mask will work great

Action Army 6.03mm AEG Barrel 540mm Military & Government Airsoft Training Guns The hop up is fullyThe Action Army 6. 03mm AEG Barrel 540mm. 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.