VFC (UMAREX) MP5 GBBR Owners Thread

lassegmail · October 10th, 2015, 15:23

This gun is so much fun :-)
But what is the best plan of attack to improve this?

This is at 9 meters. 9 in a 4,5cm group, and 1 flyer.

Danke · October 25th, 2015, 17:52

Gamed mine effectively for the first time. CQB in a barn with temps around 2c.

Wouldn't cycle at all on propane. Gave a touch of MAP and it ran fine.

Still need more hop but otherwise very near the sweet spot.

edh · November 24th, 2015, 23:24

does any one know if any gas short mags fit the vfc gun?

_Whiskey_ · December 3rd, 2015, 15:46

Does anyone have a way to drop the fps to cqb limits say 380 or less? with the hop set I can get 390 and only drops down to 380 or below after 4 or 5 shots any suggestions?

BioRage · December 3rd, 2015, 16:00

Quote:

Originally Posted by _Whiskey_

Does anyone have a way to drop the fps to cqb limits say 380 or less? with the hop set I can get 390 and only drops down to 380 or below after 4 or 5 shots any suggestions?

Be a dick, fill with duster, chrono, and switch back to propane.

Possibility 1:
https://www.youtube.com/watch?v=v30g2_dxk1A

Possibility 2:

1. Shim the floating valve forward
2. Trim/Weaken the floating valve spring
3. Make a custom flow restrictor for the nozzle

Possibility 3:

http://shop.ehobbyasia.com/upgrade-p...l#.VmCfOXarS9I

_Whiskey_ · December 3rd, 2015, 16:14

Quote:

Originally Posted by BioRage

Be a dick, fill with duster, chrono, and switch back to propane.

Possibility 1:
https://www.youtube.com/watch?v=v30g2_dxk1A

Possibility 2:

1. Shim the floating valve forward
2. Trim/Weaken the floating valve spring
3. Make a custom flow restrictor for the nozzle

Possibility 3:

http://shop.ehobbyasia.com/upgrade-p...l#.VmCfOXarS9I

Thanks for the info and links Bio,

edh · December 5th, 2015, 19:02

any one found one that fits the vfc green gas mags?
i have 2 one i just got from marstar it is real steel and it does not fit either...these mags seem fat.
are the c02 mags the same..i have not got one yet?
thanks for any help

N_Force · December 5th, 2015, 23:09

Duct tape it, Walmart has camouflage for 5$
If both same side up, you need spacer.
If reverse side, then just tape them

edh · December 6th, 2015, 14:34

Quote:

Originally Posted by N_Force

Duct tape it, Walmart has camouflage for 5$
If both same side up, you need spacer.
If reverse side, then just tape them

well i am going for the looks..i am a collector do not play
thanks though

lassegmail · December 7th, 2015, 15:48

Anyone have the Angry Bird 120% recoispring120
Wondering how much stronger it actually is.
With the OEM spring with the bolt on top, I tare the scale and press the bolt down until just before it touches.
Gives me 1250g. Anyone tried that with the Angry Bird?

dr.collapse · December 18th, 2015, 13:22

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!

Danke · December 18th, 2015, 15:15

What's the temperature when the gas release is excessive?

dr.collapse · December 18th, 2015, 16:59

Normal room, 18-20C. But is not permanent problem. From time to time, and i can't see any regularity.
The feeling that freezes the gas chamber . I think to reduce the rate of filling the chamber and slightly lower power . For CQB it would be even better (now the power 118-121m/s , is on the verge of the permitted) .

Danke · December 18th, 2015, 23:30

Full auto or semi when venting?

dr.collapse · December 19th, 2015, 05:42

usually auto (short) and fast semi

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October 25th, 2015, 17:52	#392
Danke Prancercise Guru Trader rating Join Date: Oct 2007 Location: Danger Zone	Gamed mine effectively for the first time. CQB in a barn with temps around 2c. Wouldn't cycle at all on propane. Gave a touch of MAP and it ran fine. Still need more hop but otherwise very near the sweet spot. __________________ Airsoft, where nothing is hurt but feelings.

November 24th, 2015, 23:24	#393
edh Trader rating Join Date: Jul 2010 Location: richmond hill	short mags does any one know if any gas short mags fit the vfc gun?

December 5th, 2015, 19:02	#397
edh Trader rating Join Date: Jul 2010 Location: richmond hill	duel mag clamp? any one found one that fits the vfc green gas mags? i have 2 one i just got from marstar it is real steel and it does not fit either...these mags seem fat. are the c02 mags the same..i have not got one yet? thanks for any help Last edited by edh; December 5th, 2015 at 22:12..

December 3rd, 2015, 15:46	#394
_Whiskey_ Trader rating Join Date: Jun 2013 Location: Cambridge	Does anyone have a way to drop the fps to cqb limits say 380 or less? with the hop set I can get 390 and only drops down to 380 or below after 4 or 5 shots any suggestions?

December 5th, 2015, 23:09	#398
N_Force Trader rating Join Date: Oct 2006 Location: Toronto, Ontario	Duct tape it, Walmart has camouflage for 5$ If both same side up, you need spacer. If reverse side, then just tape them __________________ aka Uncle Last edited by N_Force; December 5th, 2015 at 23:12..

December 7th, 2015, 15:48	#400
lassegmail Trader rating Join Date: Oct 2015 Location: Denmark	Anyone have the Angry Bird 120% recoispring120 Wondering how much stronger it actually is. With the OEM spring with the bolt on top, I tare the scale and press the bolt down until just before it touches. Gives me 1250g. Anyone tried that with the Angry Bird?

December 18th, 2015, 13:22	#401
dr.collapse Trader rating Join Date: Dec 2015 Location: Moscow, Russia	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!

December 18th, 2015, 15:15	#402
Danke Prancercise Guru Trader rating Join Date: Oct 2007 Location: Danger Zone	What's the temperature when the gas release is excessive? __________________ Airsoft, where nothing is hurt but feelings.

December 18th, 2015, 16:59	#403
dr.collapse Trader rating Join Date: Dec 2015 Location: Moscow, Russia	Normal room, 18-20C. But is not permanent problem. From time to time, and i can't see any regularity. The feeling that freezes the gas chamber . I think to reduce the rate of filling the chamber and slightly lower power . For CQB it would be even better (now the power 118-121m/s , is on the verge of the permitted) . Last edited by dr.collapse; December 18th, 2015 at 17:06..

December 18th, 2015, 23:30	#404
Danke Prancercise Guru Trader rating Join Date: Oct 2007 Location: Danger Zone	Full auto or semi when venting? __________________ Airsoft, where nothing is hurt but feelings.

December 19th, 2015, 05:42	#405
dr.collapse Trader rating Join Date: Dec 2015 Location: Moscow, Russia	usually auto (short) and fast semi

VFC (UMAREX) MP5 GBBR Owners Thread

Airsoft Guns Discussion