Nuprol 650mm 6.03mm AEG Barrel

This barrel here has been used a few times in a few skirmishes but has since been sat on the shelf for awhile as i no longer have a use/need for it anymore . Like i said in the title its 650mm long and 6.03mm wide. I have cleaned both the inside and outside of both the barrel itself and its container with isopropyl alcohol.