Marky [UE]

It's been a while since I posted but I have still been watching the thread loosely. I have a couple of questions. I own two of the first batch of CO2 mags, what do people mean by "new type" CO2 mags? What has changed? I get about 26 shots out of a full CO2 bulb! I am also interested in knowing if anyone knows of a better replacement bolt catch. I have recently fitted a MagPul BAD lever and a RS pin for the bolt catch (ping pong paddle) but the WE standard catch is way too loose. Thanks and Merry Christmas to all, Mark

Has anyone managed to fix their semi/auto burst issues yet? I have some more spare parts on the way to swap out in a desperate attempt to get mine fixed, still struggling.

Atfer trying long and hard to solve my post CO2 upgrade issues I still have exactly the same problems Nazio. To be honest I have given up trying to solve it right now. I was hoping a solution would appear in the community or a fix of some sort would come from WE. There really does seem to be a fundamental issue somewhere, but I certainly can't locate it! Since my CO2 upgrade I have rebuilt my rifle so many times I lost count and I simply can't find any component at fault. Nothing is loose or misaligned. All the mechanical parts appear to operate correctly, pins and springs secure.

Quick update: my semi/auto burst issue is still not fixed and I still have no idea as to the cause. Thanks go to those who have tried to help so far. I have reassembled my entire gun so many times I lost count and nothing appears worn, in the wrong place or stuck/sticking. I get a consistent 28/29 shots from a single CO2 bulb and my chrono tests have been very inconsistent. I would really like someone to confirm the correct assembly of the trigger parts and where/how the springs should be placed when reassembling the unit. A clutching at straws theory but if the hammer spring was strong enough

"you cannot screw the tube in the way you should", in my case at least in certainly not correct, no offence but are you sure your ASAP is installed as per instructions? is it a real Magpul or a copy? I know which knobs you are describing but they don't interfere with the installation of the buffer tube at all. As I mentioned previously I couldn't screw the buffer tube in any further if I wanted to as it is already flush with the buffer tube retaining pin.

I installed a Magpul ASAP sling mount a fair while back, long before I started having my semi/auto burst issues. If the Magpul ASAP is installed correctly then it doesn't change anything over the standard part it replaces. That being said I can confirm that the buffer tube is now in an improved position, if I could screw it any further in it would be past the buffer retaining pin. And as mentioned this change has not corrected my issue.

My semi/auto issues, the latest update. After a private message from TrooperX, thanks for the help, I double checked the positioning of my buffer tube and the buffer retaining pin. They could both be improved so I have tightened the pin and refitted the buffer tube. Unfortunately the semi/auto burst issue still exists. After a number of counts during my mag tests I can also confirm that the number of shot cycles per mag stands at 28. I suppose this shows consistency somewhere, back to the drawing board.

As per my later update I have NOT managed to remove the semi/auto burst issue but it's certainly reduced in frequency. I also remember the earlier CO2 full auto video WETTI did where the bulb appeared to manage a single mag. I should be so lucky, I am not even getting a full mag usig the semi/burst mode I currently have I do think that my two issues could still be related somehow. I just have keep going until I figure everything out and remember to stop whenever I feel like throwing something out of the window

Correction, after further testing my semi/auto issue still exists since I added part #117

The white block is not on the exploded diagram as it was added to align the nozzle assembly and guide rod after earlier problems. This is commonly called the valve or guide rod stabiliser. It might have been glued to ensure it doesn't move forward during normal use. Part #38 can be a real pig to get out as the stabiliser can have a pretty good grip on it. I normally get round this by first removing bolt #36 and then extending the nozzle and guide rod forward. This allows the two holes through part #38 to be used. I take a small cross head screwdriver and push that through the holes. For the ne

Update on my semi/auto issues. This post stopped me in my thoughts. I had previously managed to convince myself that the new design CO2 system no longer required part #117, it must have been the bottle of wine that clouded my judgement. I have just reassembled my barrel with part #117 in place and the semi/auto issue seems, at the moment, to have been resolved still not getting many shots out of a mag though so there is at least one problem left to figure out. If you push the release valve on a full CO2 mag when not in the gun should the pressure return the release valve after letting

I upgraded the stock trigger parts after the problem started to occur in an attempt to resolve the issue. As you say not much left to try so maybe a full stock rebuild is in order. I have run out of green/propane gas so I can't confirm how that works at the moment.

Yeah I wish I had a WE owner nearby with some fresh eyes. I spent about twenty minutes staring at the trigger unit doing just that earlier but alas no cigar.

I will get some pics done when I don't feel like throwing in the towel... getting mighty close at the moment Double check Ottos post on page #239 regarding rubber selection. That's the only info I can recall. I have taken the barrel apart lots of times now and it's a real pain in the neck. A PMAG or a PMAG outer would be really nice.

Thanks for the suggestion I just removed and rebuilt the trigger unit again to check. Safe, semi and auto modes are working exactly as they should including the valve knocker. Tried another mag after rebuild, no change. For reference my rifle mechanical specification is currently as follows: WE M4 GBB AFC Custom v2 from Airsoft Buddy Upgrades: 7075 aluminium charging handle LAT bearing set TSC steel hammer TSC steel sear TSC steel match trigger type 1 TSC anti-rotation pin type 2 Full CO2 upgrade kit 262mm Precision chrome inner barrel with new hop-up and lo

Just checked everything I can think of and performed some more tests. 1 CO2 bulb managed to shoot 28 rounds All rounds were fired with semi selected, around 12 trigger pulls resulted in double/triple shot bursts. It's difficult to know if all these resulted in a round being chambered and fired. Both mags are operating in the same way and don't have any leaks, suggesting the fault is in the gun. Chrono of a full mag started mid 440fps and ended at 328fps going down over the course of the magazine, some readings failed. I don't consider this consistent or useable. The front o-ring s

After a quick double check on part #112 it is secure and in the correct position.

Sounds like we have the same issues here. How many shots can you get out of a full mag?

I am still trying to diagnose my semi/auto issue. I had noticed that my hammer roller was hitting the white stabiliser. Based on your findings (different issue I know) I decided it was worth cutting about 3 to 4mm off the end of the stabiliser. It might have improved the situation a little i.e. less auto when semi is selected but it's certainly not resolved I have also counted my shots and I can't get a full mag out of a single CO2 bulb at the moment, I really hope that these issues are related. The CO2 nozzle is supposed to be a 350-380 configuration so if anyone has a working CO2 rifle us

Thank you very much for taking the time to put this together it has confirmed a few assumptions. Using your diagrams and notes I can't say I have any reason to find fault with the way part #54 is working particularly since the TSC steel parts upgrade. My hammer and sear have a strong bite when they do connect. I wonder if the bolt carrier is failing to push the hammer far enough back/down to engage #54, my upgraded bearing roller appears to sit slightly lower than the stock one when running under the carrier, this might be lower still with the TSC hammer. Also the strength of the hammer spring

Good question, don't have any working std. gas mags or gas at the moment. Might have to borrow some and test this.

IMHO This is simply not true! Obviously everyone is entitled to and has their own expectations as to the level of interaction and information they expect when a commercial user enters a discussion thread. That being said I think we can all forget that this work is generally done outside working hours and although it may be primarily promotion based, it is also done to help the community/customers and to become involved. These particular users are more than likely enthusiastic about their business and/or product and enjoy the additional interaction. There is however a risk, particularly wi

My semi/auto issues also started after converting my V2 to CO2. I recently rebuilt the trigger unit with the upgraded TSC parts for the sear, hammer and trigger. When rebuilding I was unsure as to the correct position and alignment of the hammer spring so this might not be 100% but it does seem to work correctly, hopefully the wiki will be updated in this area over the weekend. The trigger unit is rock solid and the fire selector seems to work well and holds a solid position for safe, semi and auto. This is why I am now struggling, as previously mentioned I need a decent explanation or drawing

Can anyone explain how the fire selector controls the switch from semi to full auto? I am trying to come up with causes for the inconsistent semi/auto issues I am experiencing. Thoughts so far include: 1) Gas pressure 2) Recoil spring 3) Trigger unit... !? fire selector I am struggling on this one and so far have had no responses and no success on Google. Thanks, Mark

Looking really nice, where did you get the flash from and what thread is it? On another note has anyone read my earlier post re semi/auto issues, I am really struggling here.