Action Army 6.03mm AEG Barrel 290mm Rail Interface Systems Great for HPA conversions too

Great for HPA conversions too

Uses spare KWA MP7 green gas magazines

full blowback

All metal and highest quality

Also happens to fit the SP-01 Shadow pistol

Action Army 6.03mm AEG Barrel 290mm Rail Interface Systems Great for HPA conversions tooThe Action Army 6. 03mm AEG Barrel 290mm. 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.