Matrix 50 Round Magazine for M4 M16 Golden Eagle Western Arms King Arms GBB Gas Blowback Rifles

"Is there a drum mag what has this same part of the top mag ?

"This magazine is perfectly identical to the mags that came with my matrix/S&T rifle. Has worked great and I have skirmished it multiple times. Just the restock is annoying, but that’s evike’s fault not S&T

"As they come from the factory, these magazines deserve 2.5-3 stars in my view. They feed and dispense gas very well, and they are sturdily made. However, they are extremely difficult to load, and are prone to leaking due to common O-ring problems. In my opinion, this is unacceptable for a $45 magazine, and the manufacturer needs to address these issues.

Fortunately, there are ways to make these mags worthy of five stars, but it will require extra time and money. One thing I learned from the outset was that you can use a pencil or thin screwdriver to depress the follower while loading BBs. If this is done at just the right angle, it makes loading significantly easier. It is, however, still a delicate and slow process. If you are willing to spend some extra money, the feeding issue can be solved entirely by going to cedar3d.com and purchasing one of there Odin speedloader adapters.

https://www.cedar3d.com/product/6mmProShop_GoldenEagle_M-
4_GBBR_Speedloader_Adapter/39?cp=true&sa=true&sbp=fa-
lse&q=false

This should solve your loading troubles.

As far as leaky O-rings go, there are tutorials on youtube on how to disassemble this magazine and then add rubber gasket in the seal areas to ensure they do not leak.

With the addition of the rubber gasket mod and the odin speedloader, these magazines will serve you well.