Airsoft Canada
007 Licence to Shoot

Go Back   Airsoft Canada > Discussion > Airsoft Guns Discussion
Home Forums Register Gallery FAQ Calendar
Retailers Community News/Info International Retailers IRC Today's Posts

we msk fps problems


Airsoft Guns Discussion

Thread Tools
Old November 5th, 2014, 20:53   #1
Join Date: Mar 2012
Location: sorel-tracy
we msk fps problems

hi guys i want to know wtf is going on with my msk . Ive install a npas in it and ive chrono it with .25 , mags full of brand new propane and that the result im getting


i made the test at 20 celsius with warm mags in semi and at each shot a pause of 5-10 sec . Doyou have a idea ?
Privateryan32 is offline   Reply With Quote
Old November 5th, 2014, 23:15   #2
Kos-Mos's Avatar
Join Date: Nov 2005
Location: LÚvis (QC)
Do you have a grey nozzle?

If so, you have to modify it to get full FPS adjustement range.

Newer versions of WE guns, especially the ones with shorter barrels, have a grey nozzle. The two prongs behind the valve/NPAS are longer than the black nozzles.
You can see the molding marks on the two prongs, that is where you want to cut it to get full FPS adjustment.

The nozzles where changed to improve gas efficiency, as a lot of gas was just wasted in the barrel after the BB left, with no FPS improvement.
That is the case of the SCARs and 74u amongts others, maybe they installed the grey nozzle in yours.

Even though they look different, M4 nozzles fit and function fine in the MSK.
The newer nozzles have extra guides around the gas feeding port to compensate for the lack of top guide.
Originally Posted by Drake View Post
Damnit, don't make me add "no discussing temporal paradoxes" to the rules or I'll go back in time and ban you last week.

Last edited by Kos-Mos; November 5th, 2014 at 23:58..
Kos-Mos is offline   Reply With Quote
Old November 5th, 2014, 23:41   #3
Trendkilla's Avatar
Join Date: Apr 2013
Location: Windsor Ontario
Ive owned a msk for allmost a year now and never got to game it. Do not buy the RATech cnc aluminum nozzle . Will not fix the problem. The most that ive ever found out was on youtube that the WE 20 rnd mags will work but the guy that posted it never followed up. Its a cycling problem that is on most msk guns. World wide. In a short time your mags will release gas before the mag is done. Unless this is allready happening. I never had the chance to chrony mine when this was happening. This may be the problem or I may be way off . Keep me updated..
Modesty / Honor / Respect / ***Team CryeWolf***

Trendkilla is offline   Reply With Quote
Old November 6th, 2014, 00:24   #4
Join Date: Mar 2012
Location: sorel-tracy
in my case ive got the black plastic nozzle and ive put a ratech npas made for the m4 we open bolt inside but ive think i maybe got teh same issued that everybody got with the ratech aluminium nozzle the spring that retaining the npas inside is too weak for the npas so its made some fps not stable . im gonna try to put my hand on a we m4 spring and switch them to see if its better in my msk
Privateryan32 is offline   Reply With Quote
Old November 7th, 2014, 11:42   #5
Join Date: Mar 2013
So is the npas is an aluminum nozzle or that adjustable bulb? If it is the aluminum nozzle then check your spring. If its tapered then you have the latest "version". If its a straight spring then remove it and toss in the spring from the plastic nozzle. If its the bulb style then you have the same issue mine did. One mod you could try is (if your brave enough) sanding down the base it sits on. There should be two little nubs on the lower half of the plastic nozzle. Or try stretching the spring.
syrus is offline   Reply With Quote
Old November 10th, 2014, 12:09   #6
Join Date: Mar 2012
Location: sorel-tracy
after a little work on my msk i manage to get the best result i can have with it for playing in cqb . What ive done is ive polish the lower of the bolt , the part that touche the hammer to remove the grey sticky paint and you do the same on the top of the hammer and ive change the nozzle spring of the msk for a we m4 open bolt spring and stretch it a little and now all work like it suppose to here is my result with a fill of propane , .25 elite force bb and 10 shot in sigle fire


so much better and by the way im using the msk pmag just to be clear hehe
Privateryan32 is offline   Reply With Quote

Go Back   Airsoft Canada > Discussion > Airsoft Guns Discussion


Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Airsoft Canada
007 Licence to Shoot

All times are GMT -4. The time now is 15:15.

Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2020, vBulletin Solutions Inc.