renegadecow Posted October 22, 2010 Report Share Posted October 22, 2010 If you have that very faint leak from the top where the gas normally comes out, and your main o-ring is intact, chances are the forward sealing o-ring has shrunk or has some kind of damage on it. Since this o-ring is kinda small and has an even smaller ledge to hold on to, I find liquid sealants to have little effect. For this I wrap about 4" worth of half the width of ptfe tape (using full width may be too thick). Just wrap it around paying attention to the orientation of rotation when you tighten the valve back in so the tape doesn't undo itself. Pack the tape tightly mostly forwards of the o-ring and a couple turns on the o-ring itself. Basically you're making the tape into a kind of spacer so the o-ring seals tightly against the ledge in the mag. Do not get any of the tape inside the valve opening because the pressure from a shot will unravel the tape. On one of my mags I've replaced the o-ring (torn) entirely with ptfe tape and seems to work just as well. Quote Link to post Share on other sites
mnmc10 Posted October 22, 2010 Report Share Posted October 22, 2010 if you think all of the orings on the mag valves are in working order. then another possible source of leak is the metal square insert hiding below the feed lip and rubber seal. Quote Link to post Share on other sites
kojak Posted October 22, 2010 Report Share Posted October 22, 2010 OK; I remember your mag now. FYI, AEX San Diego showed me a CO2 mag that they said exploded right on their workbench, at room temperature! Thanks for the tips on the mags; got a list of O-ring sizes? I've used a variety pack in the past, but my local hardware stores sells the better o-rings individually wrapped in hundreds of sizes. Â Does anyone else have excessive friction between the large O-ring on the nozzle and the brass chamber with the NPAS? The gun is working fine but just seems really tight, and I've actually polished the inside of the brass chamber. Quote Link to post Share on other sites
TwinTurboCH Posted October 23, 2010 Report Share Posted October 23, 2010 I've had a quick look and used the search button, but I can't go through 341 pages to find the answer to this. Â Does anyone know of a URX style front end that will fit my WE M4? I've had it a fair while now and want to play with the externals as I'm getting bored of the current layout. Â Thanks guys. Quote Link to post Share on other sites
jkpics Posted October 24, 2010 Report Share Posted October 24, 2010 G&P URX fits like a dream, but you need to buy the tools for it, they cost a ekstra 50 USD. Quote Link to post Share on other sites
TwinTurboCH Posted October 24, 2010 Report Share Posted October 24, 2010 Thanks man, much appreciated. Is that the one that is listed in most places as being for WA GBB's? Quote Link to post Share on other sites
jkpics Posted October 25, 2010 Report Share Posted October 25, 2010 I have only fitted a AEG version, no problems. Quote Link to post Share on other sites
Deltacor Posted October 30, 2010 Report Share Posted October 30, 2010 (edited) Does anyone know where to buy part 68 in the UK? Â or instead of that does the real steal ones work? Edited October 30, 2010 by Deltacor Quote Link to post Share on other sites
trdsupragt Posted October 30, 2010 Report Share Posted October 30, 2010 Do you guys know of any retailer that stocks enough parts for me to build a second complete upper receiver? I've already got an upper receiver host, but no parts. Oh and if it's worth mentioning, the receiver was from the V1 days. Quote Link to post Share on other sites
danielsilva Posted October 30, 2010 Report Share Posted October 30, 2010 Does anyone know where to buy part 68 in the UK? Â or instead of that does the real steal ones work? Â Care to remind me which part is that ? Don't have any diagram laying around ... Quote Link to post Share on other sites
Deltacor Posted October 30, 2010 Report Share Posted October 30, 2010 The rear takedown spring the one that comes out of the buffer tube Quote Link to post Share on other sites
Ian24 Posted November 1, 2010 Report Share Posted November 1, 2010 I think airsoftbuddy would be your best bet. Or TQM... Quote Link to post Share on other sites
Mr D's Posted November 23, 2010 Report Share Posted November 23, 2010 Sorry to ask if this has already been covered, but which Magpul UBR stock fits the WE M4A1/HK416 without modification? Â I've been reading through pages of info on this site and can't find a definitive answer. Â Does the PTS version fit without modification? Â Do I need the RS version? Â I can't get a straight answer out of the dealers so I've come to the experts!! Â Thanks Quote Link to post Share on other sites
danielsilva Posted November 23, 2010 Report Share Posted November 23, 2010 Can't say anything about the RS one cause i never tried one ( too darn expensive around here ) but it *should* fit without any mods. The PTS on the other hand DOES need fitting, can't remember what i exactly had to do but it wasn't something simple to do. In the end i got the Element copy of it and i only had to file somethings to fit it, they aren't that great in QC/specs so each unit will have to be filled accordingly. Quote Link to post Share on other sites
jkpics Posted November 23, 2010 Report Share Posted November 23, 2010 I have fitted the PTS and the ELEMENT UBR and the ELEMENT takes less work but needs ekstra parts (screws are short and long) the PTS one needs a lot of work on the threads of the buffer tube, and on both you need to cut down the rubber spacer under the buffer spring, all in all a rather big project, 4-5 houres. Quote Link to post Share on other sites
Mr D's Posted November 24, 2010 Report Share Posted November 24, 2010 Thank for that 'jkpics', I'll try to source a RS version. Quote Link to post Share on other sites
dermonic Posted December 5, 2010 Report Share Posted December 5, 2010 to we m4 gurus: Â my full auto sear seems to have a problem. when the hammer is pulled back, it catches the full auto sear. i have to switch to semi auto then the hammer would release. Â any ideas? Quote Link to post Share on other sites
nickthebrick65 Posted December 5, 2010 Report Share Posted December 5, 2010 to we m4 gurus: Â my full auto sear seems to have a problem. when the hammer is pulled back, it catches the full auto sear. i have to switch to semi auto then the hammer would release. Â any ideas? Â I don't have a WE, but I did have a kjw m4 that was having the same problem. My problem was caused by a foreign object that lodged itself under the sear/selector. An oring blew off my nozzle and landed under there, perhaps that could be your problem to. Quote Link to post Share on other sites
jkpics Posted December 6, 2010 Report Share Posted December 6, 2010 Worn out trigger parts, get the ra-tech steel replacement set. Â All kinds of wired stuff happons when the parts fail. Quote Link to post Share on other sites
dermonic Posted December 6, 2010 Report Share Posted December 6, 2010 no foregin object found. seems like my full auto sear is bent. Quote Link to post Share on other sites
jkpics Posted December 10, 2010 Report Share Posted December 10, 2010 You might bendt it if you force the gun closed on full auto, should be easy to strighten out again, it is one of the few parts that is steel, or a new part will run you a few $. Quote Link to post Share on other sites
JColt Posted December 11, 2010 Report Share Posted December 11, 2010 Can anyone tell me how to remove the black assembley so i can fit the NPAS kit. All the tutorials are for SCARs and i don't have a clue how to remove the peice as it appears stuck fast. It's the bit that the valve and its pipe go into that is secured into the bolt carrier with a big screw at the back. Cheers. Quote Link to post Share on other sites
Ditht Posted January 6, 2011 Report Share Posted January 6, 2011 Hi, sorry but I don't have the time to read through 340+ pages and I was wondering if the magpul PTS CTR and magpul PTS MOE grip will fit on the WE m4 well? Quote Link to post Share on other sites
danielsilva Posted January 6, 2011 Report Share Posted January 6, 2011 Hi, sorry but I don't have the time to read through 340+ pages and I was wondering if the magpul PTS CTR and magpul PTS MOE grip will fit on the WE m4 well? Â The PTS CTR will fit just fine but the MOE grip for GBB's will have to be modded, they are made for the WA platform and as such they don't come with the hole for the selector detent spring ( like the RS one ), the "space" is there but you'll need to drill the hole yourself Quote Link to post Share on other sites
Ditht Posted January 7, 2011 Report Share Posted January 7, 2011 The PTS CTR will fit just fine but the MOE grip for GBB's will have to be modded, they are made for the WA platform and as such they don't come with the hole for the selector detent spring ( like the RS one ), the "space" is there but you'll need to drill the hole yourself  Sorry I didn't mean the moe grip, I meant the handguard. Quote Link to post Share on other sites
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