Action Army 6.01mm Inner Barrel for AEG - 310mm June 2021 its designed for a tight

its designed for a tight fit on the threads and to not flex

Feature-rich

This is the A1 model of the standard M9

A highly realistic muzzle brake for any 14mm CCW threaded barrel

The barrel measure 85mm in length

Action Army 6.01mm Inner Barrel for AEG - 310mm June 2021 its designed for a tightThis 6. 01mm tight bore barrel from Action Army is a great way to increase the accuracy and FPS of your AEG. The barrel measures 310mm in length. The innner diameter of the barrel is 6. 01mm. Remember to use only the highest quality BB's with this barrel as due to its tighter bore, jams and mis feeds can happen with low quality BB's. Always test your FPS after installing to make sure your AEG remains under the legal limit in your region.