M92 GBB Shooting Issue

[BeardyFalcon]

Hey guys!

On the last trainig I was facing an issue with my M92 GBB form KJW. First 6-7 BB's were OK but then it stops shooting normally. It shoots once, then it doesn't load the next BB (Slide doesn't move fully) and the hammer is not cocked. But when I try to shoot again, it loads the BB and it shoots afterwards only once again.

The M92 is with a CO2 mag. I have tried also a classic GG mag but no success. Same issue. It has been also cleaned, oiled with a silicon oil but that didn't helped too.

Any ideas guys on this issue? I can show you later how it shoots by uploading a short video.

 

[BeardyFalcon]

Here is a link for the video. It is not publicly visible vid. 
 

I don't know what is wrong with it ? Do you think I should change something? It was not cold and the mag is a CO2 version.

 

[EDcase]

That's a tough one.

It obviously looks like its running out of gas but I presume you used a full Co2 cartridge.

Does the slide feel smooth when pulled back slowly?  (anything catching?)

Look for areas of metal wear to see if things are causing friction.

If you have some silicone grease, put some on the gas vent of the magazine to help with the seal.

 

[Daveoc33]

+1 for friction on the slide. Or it could be a problem with the valve knocker - perhaps not resetting properly. If it's flapping around then the sping has got loose.

 

[BeardyFalcon]

That's a tough one.

It obviously looks like its running out of gas but I presume you used a full Co2 cartridge.

Does the slide feel smooth when pulled back slowly?  (anything catching?)

Look for areas of metal wear to see if things are causing friction.

If you have some silicone grease, put some on the gas vent of the magazine to help with the seal.

Well, it was indeed a new CO2 cartridge in the mag. When I'm pulling the slide, it goes smoothly in my hand with no problem.

+1 for friction on the slide. Or it could be a problem with the valve knocker - perhaps not resetting properly. If it's flapping around then the sping has got loose.

I have 2 mags so it doesn't look like issue with valves neither. As well as I have tried also 2 GG mags - same results. I will make more pictures of the pistol on Sunday as I'm going out today and getting back on Sat night.

 

[EDcase]

Only thing I can think of is faulty/dirty output valve.  (the one at the top which is hit by the pistol striker)

Take it out and clean, inspect and oil it.  (You'll need a valve tool but they're cheap)

Other than that I can't think of anything.

Maybe send to a tech?

 

[BeardyFalcon]

I see that only the hammer is getting stuck a little when I'm loading the gun but that doesn't seem to be the problem as it shoots like 10 BB's with no issue and then it starts shooting weirdly.

View attachment 73244

View attachment 73243

View attachment 73242

View attachment 73245

View attachment 73246

View attachment 73247

View attachment 73248

View attachment 73249

View attachment 73250

 

[BeardyFalcon]

Ok, I ordered brand new CO2 mag to try it out. I will post a short video later so we can basically see where the issue might be. I should get it on Thursday so awaits a video on that day.