I love this magazine it weighs almost as much as the gun and it is flawless. I've had no problems with it. I bought my Army Detonics from CobraAirsoft and the magazine came without an o-ring so every time i fill it with gas i have to use a lot more gas because some sprayed out. I don't blame the magazine. I just think it's shotty workmanship but there are for sure no flaws with this.
Realistic Ammo Ammount (18 Rds)
No Even Minor Leaks
Gets Colder Faster
Hard To Hold Onto Thing That Brings Down The Spring To Load The Mag