Maple Leaf Precision Inner Barrel w/ Hopup Chamber Set
(Model: WE-Tech / Tokyo Marui Hi-Capa)

"pros:
moderate price
lots of adjustment for hop up

cons:
could have came with a crazy jet barrel or tight bore

pro and con:
a tiny bit longer than stock 5.1 inner barrel
- I say its a pro and con because longer means accuracy but it doesn't sit flush if you have a inner thread barrel. But if you have a outer threaded barrel then it doesn't matter.

overall great buy

"Best money you could spend to notice performance

"Nothing stellar, works well. HOWEVER the barrel is standard. NOT the Crazyjet design.