Spare Metal CO2 Magazine for Umarex H&K USP Airsoft Pistol

"If you're looking for a replacement mag get this one, not the plastic version. The gun should've came with this one (metal) because the plastic version inevitably leaks.

"I can shoot up to 10 full mag and a half in a single 12g co cartridge of CO2 on my Umarex H&K Licensed USP Full Size CO2 Gas Non-Blowback Airsoft Pistol (Color: Dark Earth).

"An excellent magazine full metal

"Great mag over all ! It gets the job done a tad bit pricey compared to the gun ( buying extra two mags is around the same as price for non blow back pistol it self) its metal and seals great . mine has no signs of leakage ( after having it for 8 months and using it everyother weekend) be advised theres locking port at the bottom on thr mag so you have to hold down the spring using the slide and if you let go all the bbs will fly righy out and you have to repeat the process of reloading it. It comes with an allen wrench to . since its metal it give your usp a heavier feel . to me thats a pro

"Considering the utter cheapness of this gun you may be wondering "should I just buy another 1" the answer is no. And here's why. Have you ever wanted to just hit the mag release and have the mag hollywoodily fall out? For you may now achieve this for the low price of $25.

Pros
-heavy
-holds seal good
-won't cross thread

Con's
-almost the price of the gun

"Metal mag gives the gun a heavier weight than the included plastic one, the metal also gives the CO2 a bigger heat reservoir potentially improving performance.

"This mag is not the same that comes with the gun. In fact it is far better quality than the one included with the gun. The one with the gun is polymer and is decent quality. This one is made of entirely metal, and is far heavier and sturdier. It is also less prone to leaking. Overall it is a real step up from the one included with the gun.

"very good clip exactly the same one that came with the gun i have had no problems with this mag at all and it is very durable made out of a very strong plastic