I bought 2 new valves for my AGM magazine that i busted and 2 ghk magazines as extras/spares. The ghk magazines require some fitment/wiggling when using for the first time (its tight but it'll fit). I had to shave a bit of material where the hole is for the magazine retaining clip. The magazines are made of an unfinished metal material and work essentially the same way as the original magazine except there is no pin that you can switch on/off for the bolt catch. Filling the magazines is silent and with no leaks around the fill nozzle, however; I still have gas leaking out the exit port but only a very little amount. Just enough to hear a slight pssss sound. Kind of disappointing considering they cost 50 bucks each. Why is it so hard to find any GAS magazines that don't leak?
Continuing on, I replaced the old discharge valve, that blew up on me, with a new one. The new one has a different design that looks sturdier. I lubed the o-rings before installing and reassembling the magazine and i was delighted when it held a charge. YAY!
Ok, so here's where I break it again. After testing both GHK mags and confirmed that they work despite the small leak, I inserted the original magazine with the new valve. After a couple of shots the bolt felt sluggish for some reason like it wasn't getting enough gas. A couple of more shots later and the plastic internals just sheared off and lodged itself in front of the bolt assembly. At the same time the repaired magazine leaks into my face.
Further inspection shows that the new valve lost an o-ring. I'm not sure but that could have been the possible reason why the bolt felt sluggish. Something was jammed in the way!
Anyways, it's time for a new bolt; internal parts and all.
