If you are starting airsoft, you will be encountering different types of magazines for the same airsoft gun. It is a matter of choosing which you would prefer using. Valken Tactical guides you through these types... "Which Magazine Type is right for you? This video covers the basics on the most common types of magazines for your M4 AEG. You can purchase magazines and other awesome products at Valken.com or your local Valken Retailer."