"Got this for my CYMA Beta AK47 and it works great. No feeding issues even with a 9.6v battery. Mag is metal and has a quick-wind access hole and the wheel on the bottom. Also, I will say it now before it happens: DO NOT POST Q's UNDER THE REVIEW SECTION!!! Read the product title AND description, as that will answer 99% of your Q's, and contact ASM's friendly customer service staff if you have further questions. "