If it's your first time to hear about the Primary Airsoft Adapter, here is Octane Airsoft to explain how this product works, which basically gives your airsoft gun a higher capacity magazine to use, especially gas blowbacks... "Just a filler sort of video, more content is on the way. Thought I’d do a quick video to explain why I haven’t posted recently and tell you guys about a really solid product from Primary Airsoft. As I said, a full review on this will come once I can get my HPA rig."