Guarder CNC Machined Aluminum Enhanced Hop-Up Chamber for Tokyo Marui Hi-Capa Gas Blowback Pistols (Model: A)

"Put in my Custom 5.1 Hi-Capa. I got the B version and every single piece came as advertised and the hop-up itself works great. the wheel is stiff enough that you can move it by hand, but it won’t move while shooting. Overall, a good product.

"I have tried the AIP and Maple leaf brass hop-ups and this one is equal to them in performance and reliability, I use the Maple Leaf bucking and swap out the hop-up arm for the Maple Leaf ones. I have shot thousands of rounds through this using an HPA setup and have no complaints. If you're looking for good performance and to shed some weight in your build look no further. You can see this in action on my youtube page: https://www.youtube.com/watch?v=c3Whro4LnSw

"I have bought 3 of these for the hi capas I have built and I have no complaints, these are great especially for the money, I’m going to continue buying these for my future builds, highly recommend