[teheelmao1]

So I was playing at my local cqb course yesterday, and I was dead but my friend was pinned down and low on ammo so I handed him my pistol, which is a we cqb master alpha, but he pulls the trigger and all the propane just bursts out of the sides and back of the slide, the slide couldn't be pulled back either until I took the mag out, since I'm new to gas blowbacks, I was wondering if anyone knew what it could be, I only had two magazines with me so they were both being refilled fairly often.

 

[nakkis]

There could be something blocking the slides movement, or you might use too low power gas. WE guns are equipped with extremely heavy slides, which need atleast green gas to operate.

If you see no blockage there, remove your slide and check that the valve is moving freely in the back section of the slide, inside the blow back nozzle/cylinder. you can find this valve in the hole as siin in this pic.

If it moves freely, Then I'd suggest buying a new piston head, and replace the old one with a PDI/Laylax part.

Other odd bug I've had, is the recoil spring guide messing up, so that it jumped out of place while I fired. It was caused because the Hop-up chamber had a crack on it, preventing the spring guide of resting on its original place. This can be fixed via buing a new hop up chamber, or if you have the know how; some DIY magic should fix it.