HAO L119A2 MWS kit is just perfect but sometimes it's just too heavy for the game.
Now we have the alloy version of the barrel for you.
It has the 14mmCCW thread for common airsoft spec muzzle deceive. 
 
Same profile as the original steel version.
 
Made in Taiwan
BB type: 6mm 0.2g BBs
Power source: Green gas 9kg
Power: 90 m/s = 0.81J with 0.2g BBs
J / cm2:  2.835 J/cm2
No primer using function