This product is very well built. It is of all metal construction, not including the rubber plate at the bottom of the mag. It feeds well and has not yet leaked on me after 1 1/2 years of use. This mag is great and is a must have for any ATP fan!
-No leaks whatsoever
-Rubber plate for falling protection
-Holds a decent amount of rounds
-Filling gas can be a hassle, as you have to remove the rubber plate to do so
-Over time, the paint can scratch off the mag
-tabs on the rubber plate can break easily if your not careful