G&P Metal 130rd Mid-Cap Magazine for M4 / M16 Series Airsoft AEG Rifles (Color: Black / Single Magazine)

"I just got this in the mail today. Looks great, quality pretty good, but one problem:

IT WILL NOT WORK WITH JG M4.

I Have the JG Li-poly Ready Stubby CQB M4 Airsoft Assault AEG Pistol w/ Reinforced Black Metal Gear Box

So many it just wont work with that gun just sucks because now I have to save up for other midcap mag's now.

"Let me start put by saying that these magazines look and feel amazing, and that they are very durable due to the awsome metal shell. However u like their looks their internal build quality is impossibly horrible if you put more than three bbs in the mag it jams.
Pros
- external build quality

Cons
- every thing you could possibly imagine

"They did not work in my VFC stricker. It says they fit VFC.. Had to return them. There well made but not for my gun. My rating is based on not fitting my gun .