In this Video, I mod and upgrade a nerf maverick rev6. This video shows in depth, step by step how to make the spring more powerful, remove some plastic for a full barrel drop (makes reloading much easier), and how to remove the air restrictors. I also show internals and what tools you need.

BTW, it cuts off twoards the end because I was tired of fooling with a spring that wouldn't fall back into place on camera. I later got it set and screwed the case back together. You can see this in the range test video which is linked below.