Airsoft Canada
http://oneshottactical.com/

Go Back   Airsoft Canada > Discussion > Doctor's Corner > Gas Gun Solutions
Home Forums Register Gallery FAQ Calendar
Retailers Community News/Info International Retailers IRC Today's Posts

DIY - Fix leaking GBB mags. (with pictures - 56k beware!)

:

Gas Gun Solutions

Reply
 
Thread Tools Search this Thread
Old August 16th, 2009, 23:37   #1
coach
aka coachster
 
coach's Avatar
 
Join Date: Mar 2008
Location: T dot
DIY - Fix leaking GBB mags. (with pictures - 56k beware!)

After reading about CDN_Stalker fixing some GBB mags I did a few of mine and then did about 10+ for Duckman. All seem to be holding fine and operate normally without the previous leaking issues.

The thread is for Silverthorn as I mentioned in his thread how to do it. Well I'm finally posting it for you bro!!

---------------------

Well, it's super easy to do. This will only work if it is the main seal that is the issue.

All you need are some basic tools and a tube of Blue Gasket Maker from Canadian Tire which can be had for about $6-7.



*Note that I stuck an old zip tie in the extension tube. when it dries, the material can easily be pulled out and then you don't loose your nice nozzle/tip.

***DISCLAIMER***
Since the second batch of mags I had to work on are primarily KSC socom mags (heavyweight), I managed to set up my camera to take these pictures. This DIY will work with other mags but I will not guarantee 100% effectiveness as all mags are similar but will have their obvious differences. I have done the same procedure for a WE p14, Maruzen p99 and a WA cougar. It also will work for the TM MK23 Socom mags but I would suggest removing the safety valve, JB weld the hold and then follow the procedure below.


KSC MK23 Socom mags:





1. First off vent out all the gas in the mag then disassemble it by pressing the inner ring and sliding the bottom plate off. Beware that there is a spring inside that will likely fly off (not typical for all mags)



2. Punch out the pins (some mags are held on with a Phillips screw)



3. Remove the bottom piece (can't think of what it might be called) You might need a pair of pliers or a flat head to coax it out.



4. Carefully remove and inspect the main seal. It should be intact. If you haven't tried giving it a silly oil bath try this now as that can solve the problem in most cases. Oddly, the socom seals blew up to about 4-5mm bigger than what would fit so a silly bath wouldn't work. Fortunately, after drying them and letting them sit, they regained their shape and size. My method is to reuse the original piece so if it is damaged, I am uncertain as to how well this fix is.



5. Clean all areas to remove any remains of silly oil and grim that has accumulated over the years. Duckman happened to dump a ton of oil in some of his mags trying to bring the main seal back to life. Oil everywhere including my bedroom floor!



6. Run a bead of the Blue Gasket Maker around the spot where the main seal sat. Clearly, it doesn't have to look pretty.



7. Reinstall the main seal. Let the gasket maker squish out. Just clean up any excessive amount with a piece of cardboard, toothpick or something. Be creative. Then run another bead of it on top of the seal. I messed up a bit on that pic as it should be more on the side so that it contacts the side of the mag more.





8. Inspect the inside of the mag and clean it of any oils as well.



9. Run a small bead of the gasket maker around the lip. I try to place the bead in such a way that when the bottom piece is inserted that not too much finds it's way into the main reservoir.



10. Reinsert the bottom piece. You may find that it won't go all the way in. Press the flow valve button. You can sometimes create a little bit of pressure inside which is a good sign. I also use a hammer to tap it into place.



11. Reinsert retaining pins.



12. You're almost done.

DO NOT PRESSURIZE YOUR MAGS AT THIS POINT! YOU MUST LET THEM CURE FOR 24 HOURS!

This is where I differ a bit from CDN_Stalker. I will give my mags less than a 1/2 second burst of gas. I feel that this helps indicate if you got a leak still before it cures. But, if you get too much inside, it will vaporizer and become a huge mess when you shoot your gun. Once cured, gas it up and fully vent your mag, all at once, outside of your gun. Do not insert into a gun until you've done this at least once. I fully gas them up and vent them twice to ensure there are no little bits floating around. I will do it a third or forth time if stuff comes out.

13. Now you're done. Gas and load them up and go shoot some friends!


Here are some pictures of the same job on the p99 and cougar mags:








If people still don't want to do this themselves, I guess I could do it for like $10. You'd have to pay return shipping so consider the cost before PM'ing me requesting for GBB mag repairs! Locals are more than welcome to ask though.

Last edited by coach; August 16th, 2009 at 23:50..
coach is offline   Reply With Quote
Old August 17th, 2009, 00:46   #2
Drake
E-01
 
Drake's Avatar
 
Join Date: Dec 2001
Location: Montreal, QC
So once everything is cured, the floorplate is basically "glued" into the mag? Or does that stuff separate easily?
__________________
Drake is offline   Reply With Quote
Old August 17th, 2009, 08:13   #3
coach
aka coachster
 
coach's Avatar
 
Join Date: Mar 2008
Location: T dot
Quote:
Originally Posted by Drake View Post
So once everything is cured, the floorplate is basically "glued" into the mag? Or does that stuff separate easily?
essentially yes. it's basically a soft silicon so you can pull it apart if required for further maintenance. It just may take a little effort. I would guess you can also remove the flow/output valve on some mags and insert a probe to assist pushing it out. but considering how it cured in the nozzle/tip, it's fairly easy to remove. it pretty much fills all the gaps where gas can leak out.

The mags that I have repaired were chronic leakers and were pretty much sitting for the past couple years.
coach is offline   Reply With Quote
Old August 17th, 2009, 08:17   #4
Silverthorn
 
Silverthorn's Avatar
 
Join Date: Mar 2008
Location: Sainte-Julie, Quebec
My own special DIY!

Thanks a bunch Coachster for the great work. I eagerly await testing it on my mags. Hope it helps a lot of other players too. Thanks again!
__________________
Team N.A.P.K.I.N.S (Ninjas And Pirates Kommando Infiltration Night-ops Specialists)

Silverthorn is offline   Reply With Quote
Old August 17th, 2009, 08:28   #5
coach
aka coachster
 
coach's Avatar
 
Join Date: Mar 2008
Location: T dot
Quote:
Originally Posted by Silverthorn View Post
My own special DIY!

Thanks a bunch Coachster for the great work. I eagerly await testing it on my mags. Hope it helps a lot of other players too. Thanks again!
I might be a little slow getting stuff done, but I'll get it done.....eventually!
hahaha
best of luck with your fix.
coach is offline   Reply With Quote
Old August 17th, 2009, 16:14   #6
Airmax
 
Airmax's Avatar
 
Join Date: Aug 2006
Location: Langley, BC
Just the right info I was looking for. I have a few mags that are leaking, and I could not come up with any idea's until I read this. Strongly suggest this made into an "Sticky"
great post
cheers
__________________
That's what you said last time, Then look what happened!

(LMAG) http://www.lowermainlandairsoft.ca
Admin 2014
Airmax is offline   Reply With Quote
Old August 17th, 2009, 16:27   #7
dpvu
 
Join Date: Mar 2008
Location: Calgary
Send a message via MSN to dpvu
I have done this with good results to about 4 GBB mags. Remember to clean it before you apply the gasket sealer. Also, while everything is a part, it's a great time to just give everything a wash/wipe down. A lot of crap accumulates in the mags after a while.
__________________
JG HK416
KWA USP
dpvu is online now   Reply With Quote
Old August 18th, 2009, 16:59   #8
Silverthorn
 
Silverthorn's Avatar
 
Join Date: Mar 2008
Location: Sainte-Julie, Quebec
Simply unbelievable...

After doing this work to my Glock 17 mags (brand is "Booming", some renaming of a brand, I don't know which one) I managed to shoot 50+ BBs from a single fill-up. I used to have a hard time shooting more then 20 BBs even with the mags new out of box.

Thanks a lot Coachster!
__________________
Team N.A.P.K.I.N.S (Ninjas And Pirates Kommando Infiltration Night-ops Specialists)

Silverthorn is offline   Reply With Quote
Old August 18th, 2009, 17:08   #9
kuchervano
 
kuchervano's Avatar
 
Join Date: Apr 2006
Location: Winnipeg
Send a message via MSN to kuchervano
Premium, going to try this on mah GBB now!
Thanks comrade.
__________________
kuchervano is offline   Reply With Quote
Old August 18th, 2009, 18:14   #10
coach
aka coachster
 
coach's Avatar
 
Join Date: Mar 2008
Location: T dot
Quote:
Originally Posted by Silverthorn View Post
Simply unbelievable...

After doing this work to my Glock 17 mags (brand is "Booming", some renaming of a brand, I don't know which one) I managed to shoot 50+ BBs from a single fill-up. I used to have a hard time shooting more then 20 BBs even with the mags new out of box.

Thanks a lot Coachster!
NP. Glad it worked.

Just one word of warning. Be careful of how much you fill your mags. Just because they don't leak, high pressure can still possibly blow a valve. Just don't over fill your mags or allow them to bake in the sun too long.
coach is offline   Reply With Quote
Old August 18th, 2009, 20:47   #11
jordan7831
will always be Mike Litoris in our hearts
 
jordan7831's Avatar
 
Join Date: Jul 2004
Location: North York - Toronto
Thanks for the great DIY! I'm just starting out in GBBs and have been searching for a thread just like this! On a side note, do you have any recomendations on those dreaded tanaka mags? Is there is any hope for them?

Last edited by jordan7831; August 18th, 2009 at 20:48.. Reason: Forgot to suck up for a reply to my question
jordan7831 is offline   Reply With Quote
Old August 18th, 2009, 21:09   #12
coach
aka coachster
 
coach's Avatar
 
Join Date: Mar 2008
Location: T dot
Quote:
Originally Posted by jordan7831 View Post
Thanks for the great DIY! I'm just starting out in GBBs and have been searching for a thread just like this! On a side note, do you have any recomendations on those dreaded tanaka mags? Is there is any hope for them?
never opened one so I couldn't say. break one open and post a pic?
coach is offline   Reply With Quote
Old August 18th, 2009, 23:11   #13
Drake
E-01
 
Drake's Avatar
 
Join Date: Dec 2001
Location: Montreal, QC
Wow, gonna have to try this

Thanks for the tutorial
__________________
Drake is offline   Reply With Quote
Old August 18th, 2009, 23:20   #14
aznpos531
 
aznpos531's Avatar
 
Join Date: Jan 2009
Location: Toronto
Great how-to guide! (Maybe this should be in the how-to section...it was a lonely last time I checked =P)
I will definitely give this a try the next time my leaky mag acts up again since the oil bath/teflon tape way doesn't seem permanent.
__________________

Quote:
Originally Posted by OptimusPrime View Post
I could never stop going to WalMart. Its the only place I can get good airsoft guns.
aznpos531 is offline   Reply With Quote
Old August 18th, 2009, 23:35   #15
Duckman
 
Duckman's Avatar
 
Join Date: Dec 2002
Location: toronto
just dont lose those tubes of gasket guys. we're still watching for endurance tests yet. though so far so good.
__________________
Duckman is offline   Reply With Quote
ReplyTop


Go Back   Airsoft Canada > Discussion > Doctor's Corner > Gas Gun Solutions

Bookmarks

Thread Tools Search this Thread
Search this Thread:

Advanced Search

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
http://oneshottactical.com/

All times are GMT -4. The time now is 09:56.


Powered by vBulletin® Version 3.8.8
Copyright ©2000 - 2014, vBulletin Solutions, Inc.