VFC (UMAREX) MP5 GBBR Owners Thread

[Danke]

That's the problem.

[N_Force]

The "excessive release of gas" you meant, is it the gas comes out from the ejection pot like mist?

Originally Posted by dr.collapse

Greetings from Moscow!
I join you with my MP5A3 (ver. 1)
Thanks to the forum for the solution of many problems. I set the Azimuth bolt sliders and original reinforced nozzle (of VCF). Also i milled original loading ramp (v.1) to make smooth channels in both sides. The gun is no longer jammed balls and then I successfully played 2 CQB games. There was a problem with excessive release of gas, but I'm hope to solve it by changing the size of the inlet of bulb.

Best regards!

[dr.collapse]

I often see with exhaust gas mist from the barrel and these shots are very weak . After a few shots all improving.
But sometimes it is impossible to complete the mag . The problem is float . I can not see the pattern of its occurrence.
Today played 2h CQB . The first 7-8 mags perfectly. Then came spitting gas . I had to finish the game with a RONI with Sig226 inside....

[N_Force]

If you talked about the first 7-8 mags had no problems, then gas mist started, right?
Pls give me more details:
How many mags you have in total?
How long(mins) to empty all the 7-8 mags, and how many mags you got it gas refilled and shot the second or third time?
You said the exhaust gas were from barrel, was it from the front or the ejection pot?
After finished all 8 mags, could you see any freezing sytom inside the bolt or feeling cold? And how about the temp of all mags too? Are they pretty cold? Did the blow back still ran smooth or not after empty 8 mags?

Originally Posted by dr.collapse

I often see with exhaust gas mist from the barrel and these shots are very weak . After a few shots all improving.
But sometimes it is impossible to complete the mag . The problem is float . I can not see the pattern of its occurrence.
Today played 2h CQB . The first 7-8 mags perfectly. Then came spitting gas . I had to finish the game with a RONI with Sig226 inside....

[turok_t]

Originally Posted by dr.collapse

I often see with exhaust gas mist from the barrel and these shots are very weak . After a few shots all improving.
But sometimes it is impossible to complete the mag . The problem is float . I can not see the pattern of its occurrence.
Today played 2h CQB . The first 7-8 mags perfectly. Then came spitting gas . I had to finish the game with a RONI with Sig226 inside....

Do you think it is because the gas is too cold from the cool down effect?

[dr.collapse]

Originally Posted by N_Force

If you talked about the first 7-8 mags had no problems, then gas mist started, right?

Yep

Pls give me more details:
How many mags you have in total?

4

How long(mins) to empty all the 7-8 mags, and how many mags you got it gas refilled and shot the second or third time?

~1h for all, all mags was refiiled one time minium. Some mags "add-filled" (sorry, not know how to translate ) 20-50% 2-3 times in short pauses in game.

You said the exhaust gas were from barrel, was it from the front or the ejection pot?

from front of barrel

After finished all 8 mags, could you see any freezing sytom inside the bolt or feeling cold?

Freezing - no, but bolt some cold of course.

And how about the temp of all mags too? Are they pretty cold? Did the blow back still ran smooth or not after empty 8 mags?

Mags cold like usually. Like аfter the nornal shooting. Blowback go weak.

Something is wrong. But I do not understand that .
Сan I fill a lot of gas in mag?
I use "blue" Guarder (regular green gas)

[dr.collapse]

Originally Posted by turok_t

Do you think it is because the gas is too cold from the cool down effect?

Exactly what I think . I am trying to find a way to weaken this effect .

[John Smithski]

Hi guys,
Just bought a brand new but probably one of the oldest MP5A2. Already ordered some upgrade parts from WGC but want to ask if you got any news since all these years of fighting ver 1 issues. I've ordered Angry Gun reinforced nozzle, Azimuth copper cylinder, brass guides, Crusader feeding ramp and aluminum cylinder bulb. I will be HPA tapping it anyway so stock mag valve should be ok.

So far put few mags of bbs trough it (while waiting for parts from China) and it shoots great, no misfeeds of jams, I just lubed the bolt with Superlube grease and everything else with GetSome1000. Works like a charm. Only noticed the bucking is not centered so will probably be doing VSR mod (or is there any good VFC hop up)?

[N_Force]

as all we know this is the cool down effect, but I still would like to compare your case and verify.

for game you engaged that much, you may add more mags for exchange(too short of time for refill and shoot again), or get a lunch bag with a bottle of warm water to warm up the mags(you temperature is not high enough to keep warm). or switch between your primary and pistol use(give time to warm back), or the last thing you may try is shorten the push pin(if you have spare part to replace).

Check out the link below see if it's helpful. good luck.

https://mobile.facebook.com/story.ph...&ref=bookmarks

Originally Posted by dr.collapse

Yep

4

~1h for all, all mags was refiiled one time minium. Some mags "add-filled" (sorry, not know how to translate ) 20-50% 2-3 times in short pauses in game.


from front of barrel

Freezing - no, but bolt some cold of course.

Mags cold like usually. Like аfter the nornal shooting. Blowback go weak.

Something is wrong. But I do not understand that .
Сan I fill a lot of gas in mag?
I use "blue" Guarder (regular green gas)

[dr.collapse]

N_Force, thank you!

[Sputmilk]

Hey guys, I wanted to ask about the MP5A2. I have a guy trying to sell me one(no mag, which is a bummer). Everything looks good, except the serial on the top is "KE016461". I don't know shit about these guns, is the number always different? I checked out a video review online and that particular gun had the serial "KE004419".

It's probably just a production code or something, right?

EDIT: Oops, sorry lads. Found the info in this thread earlier. My bad. All is well.

[edh]

Originally Posted by Sputmilk

Hey guys, I wanted to ask about the MP5A2. I have a guy trying to sell me one(no mag, which is a bummer). Everything looks good, except the serial on the top is "KE016461". I don't know shit about these guns, is the number always different? I checked out a video review online and that particular gun had the serial "KE004419".

It's probably just a production code or something, right?

EDIT: Oops, sorry lads. Found the info in this thread earlier. My bad. All is well.

airsoft depot has mags ,got a bunch from him

[N_Force]

How can you test it with no mag? By looking wouldn't tell!
My friend just bought a shotgun from here and seller said it was LNIB, I PM'd him questions but never reply me. When my friend got it and I spent 3 -4 hours trouble shot and fixed it. It was disassembled and screwed up internal. That's why I hate buying 2nd hand guns since those seller not honest or know nothing. Just my bad experience sharing!

Originally Posted by Sputmilk

Hey guys, I wanted to ask about the MP5A2. I have a guy trying to sell me one(no mag, which is a bummer). Everything looks good, except the serial on the top is "KE016461". I don't know shit about these guns, is the number always different? I checked out a video review online and that particular gun had the serial "KE004419".

It's probably just a production code or something, right?

EDIT: Oops, sorry lads. Found the info in this thread earlier. My bad. All is well.

[Sputmilk]

Originally Posted by edh

airsoft depot has mags ,got a bunch from him

Aye, yeah I was lookin at them. Thanks for the heads up.

Originally Posted by N_Force

Just my bad experience sharing!

Yeah, I am kind of weary about it. But I'm getting it for $140, so if it doesn't work it's not like it was a massive hit to the bank. I could probably think of something creative to do with it. Maybe make a tactical doorstop or something.

[edh]

Originally Posted by Sputmilk

Aye, yeah I was lookin at them. Thanks for the heads up.




Yeah, I am kind of weary about it. But I'm getting it for $140, so if it doesn't work it's not like it was a massive hit to the bank. I could probably think of something creative to do with it. Maybe make a tactical doorstop or something.

for that price i would buy it as well..even just to hang it on the wall or to use as a project gun..they are nice i have 2 of them