Action Army 6.03mm AEG Barrel 250mm Flashlights If you're not sure

If you're not sure

Kit includes the cylinder and cylinder head assembly

For the M9A1 model

From Elite Force / HK

Can also fit 7

Action Army 6.03mm AEG Barrel 250mm Flashlights If you're not sureThe Action Army 6. 03mm AEG Barrel 250mm. 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.