Nine Ball "Fixed" Fluted Outer Barrel for Tokyo Marui Hi-CAPA 5.1 Series Gas Blow Back Pistols
(Color: Gun Metal Grey)

"Awesome-looking outer barrel. It feels just as premium as it looks. The only thing I would have liked more is if the barrel was threaded. I ended up having to buy a tap to make my own threads. Other than that, you'll likely have to blue Loctite the grub screws, I did have it fall out of my gun mid-battle before.

"I love this barrel. It looks amazing with a cutaway slide.
The trick is mounting... it has a slightly different mount than my stock one, and when you tighten the hex, you don't want to overtighten it too much that it cracks anything.

"I purchased this to put in my aw custom hi capa. I got a maple leaf hop up and as long as you tighten your set screws down your barrel shouldn't fall out. Mine fell out after about 3000 rounds but I have tightened on there and so far so good. I would recommend maybe putting some blue loctite on there of you're unsure of the reliability of the screws