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AG1212

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Posts posted by AG1212

  2. UK Spec KWA KMP9 Pictures

    in Rifles (Gas)

    Posted

    Sound :)

     

    I think I might just send it to you then, whenever suits you best. But I warn you, it's in a state and not all due to my hand! It definitely needs new part no. 9 (the posts for the nozzle springs have been removed somehow/for some reason by the previous owner. It also had numerous other issues, probably due to not having nozzle-return springs (which I will supply).

     

    Thanks a lot!

  5. UK Spec KWA KMP9 Pictures

    in Rifles (Gas)

    Posted

    Ugh FML.

     

    After hours of trying to get the bloody bolt pins out, turns out my MP9 doesn't want to fire. The trigger doesn't engage the hammer. I have to push the dis-connector forward for it to fire. I fired about a mag through it, semi and bursts. How do I fix this PITA POS MP9? I'm just going to sell the two of them methinks and go for a nice spring action, nothing can go with spring powered rifles, right? RIGHT?

  10. UK Spec KWA KMP9 Pictures

    in Rifles (Gas)

    Posted · Edited by AG1212

    Well I'm replacing my rubber eventually anyway, but you're right.

     

    Did some testing again today.

     

    First semi and burst fire towards the end: all mags fired flawlessly (Well not flawlessly, there was one failure to lock-back, but that's not that big a deal) apart from mag C, which also stopped leaking after leaving it over-night filled with gas. I got double and triple feeding during full auto, IE it would stop spitting out bbs then suddenly 2-3 would come out instantaneously, with some bbs rolling out the front. This only happened with this one mag, it was also low on gas at the time.

     

    I refilled the mags with gas and bbs and commenced test 2: full auto mag dump. Here is the confusing part: all mags fed from start to finish and locked the bolt at the end. That's 40 rounds aprox. of fully automatic fire with little to no cool-down whatsoever (it's about 10 degrees outside, and raining heavily) despite having no nozzle return spring. Those 200 bbs were gone in a flash :D

     

    The ROF is insane, the thought of spraying even a quarter of a mag into a cheater...Not that I would ever do such a thing :huh:

     

    So this little monster jams from time to time, but when it works oh does it work.

     

     

    Thanks for all the help guys :) If I have any further issues I'll let you guys know.

  12. UK Spec KWA KMP9 Pictures

    in Rifles (Gas)

    Posted · Edited by AG1212

    Update:

     

    Magazine A: Works 100%

    Magazine B: Works 99%, failure to lock back during full auto burst, locked back when firing recommenced.

    Magazine C: Was leaking and not feeding properly. Striped down, sprayed in silicon oil, lubed part no.143, sanded 137 and lubed with silicon oil, as well as the channel. Wiped it mostly dry. Works 99%, still leaks.

    Magazine D: Didn't feed. Did same as above bar sanding the follower, works 99%, one missfire.

    Magazine E: Didn't feed. Just took apart and did nothing to it as a control. Works 100%

     

    The only remaining issues I have with the magazines are that one that leaks, one spits liquefied gas on to my hands, and some don't seem to want to be filled. How many seconds do you guys fill the mags for? I try to go for 6 seconds. Good thing about Marui mags is that they let you know when they are full. These mags remind me of my old WE 1911 mags, what a nightmare that was.

     

    Other remaining issues: Minor receiver wobble despite tightening down appropriate screws. It may have come loose already, will glue next time. Bolt catch continues to eat my bolt carrier despite sanding, concerned about over-doing it.

     

    A few notes: If you have feeding issues, do what they guys above recommended BUT don't be afraid to keep the follower area a little damp with silicon, so long as the channel is cleaned regularly. The gun still functions with the nozzle springs removed.

     

     

    Also, this thing is a gas guzzler! I'm nearly out of gas which I bought 3 days ago, after 2 days of use. Though I have put between 700-900 rounds through it so far.

  13. UK Spec KWA KMP9 Pictures

    in Rifles (Gas)

    Posted · Edited by AG1212

    Thanks for the advice, I'll try it all out.

     

    The odd thing is that sometimes one mag works 100%, then fails to feed at the end. Most failures occur when the mag starts to run out of gas: the bolt becomes sluggish, and stops sending bbs out the barrel, instead they get stuck in the rubber till enough of them force their way through and the remainder roll out the barrel. Then the mag stops feeding altogether but still cycles the bolt, eventually it runs out of gas, the bolt gets stuck and vents the remaining gas. With one of the mags the last 6 bbs got physically jammed in the feed-tube thing, I had to hack at them with a screw-driver to get out, with the upper most BB stuck in the feed lips. I've also noticed a lot wear behind the feed lips of a lot of the mags.

     

    But like I said, the same mag feeds perfectly then stops feeding properly, some the other way round, some just don't work at all. All save for one which works 100%, so I really doubt it's the gun as you said.

     

    I should mention that the nozzle springs were chewed up, I'm not sure when this happened. So I put in the other bolt which has no springs to begin with, worked find with two mags out of 5.

     

    So I'll disassemble the mags, remove lube/grease, trim the follower, smooth out the tube, remove the loading pins, lube the o-rings, replace the hop-rubbers and replace the springs and report back.

     

    The only other issues are that the bolt-stop continues to eat into the bolt despite me filing it, I'm just afraid of filing too much off. The other is that I still have receiver wobble despite tightening down the screw that you guys mentioned. It certainly helped, but I'll need to see why it didn't eliminate it altogether.

  15. UK Spec KWA KMP9 Pictures

    in Rifles (Gas)

    Posted · Edited by AG1212

    I'm currently using AIM top BB's. My local site stock them and they're just the easiest for me to use, the bonus is that my guns run through them perfectly. I'm using .28's in my MP9 at the moment but I might switch to something slightly heavier to give it just a bit more accuracy. I can't wait until the weekend when I test the range in daylight! I've just tuned the hop after Amatuerstuntman sliced off a little of the hop rubber so it no longer over hops .28's and going by torchlight it seems to be going very nicely.

     

    Over hopping .28s? Well I'm glad mine isn't doing that. The one that works has a decent trajectory. I also managed to get 2 out of 5 mags to work by lubing the follower. Only problem is that if I fire too fast they miss-feed, I have no idea why.

     

    EDIT: Is this any good? Anything else aside from rubbers and springs that are worth getting?

  16. UK Spec KWA KMP9 Pictures

    in Rifles (Gas)

    Posted · Edited by AG1212

    The manual has a break down of the MP9 magazine. http://kwausa.com/files/3213/0945/4762/MMD10_KMP9_V01.pdf

     

    I can't think off the top of my head what would be causing the other issues though.

     

    Thanks for the link.

     

    I tried a cheaper brand of BBs and ironically the feed a little better. One of the mags is 100% now, the rest still don't feed from time to time though. When I load up the BBs and let the follower go up, sometimes it moves very slowly as if it's moving through heaps of grease or something.

     

    I am getting so fed up with airsoft at this stage, my 50e POS DE shotgun is working 100% to this day, and my TM Glock is still working despite the front of the slide being cracked from green gas.

     

    I must be one of the unluckiest guys in airsoft :rolleyes:

     

    Anywho, I'll soak the rubbers, tighten down the barrel assembly and tinker with the mags and see if that changes anything at all. What brands of BBs do you guys use? First BBs I tried were some weird new brand but the BBs look very similar to G&G or KA, the second I tried were brandless BBs I bought at a site.

  17. UK Spec KWA KMP9 Pictures

    in Rifles (Gas)

    Posted · Edited by AG1212

    Got some gas today, so far not so good: the gun doesn't load a bb into the chamber from time to time, I think either I am leaving gaps between the bbs or the follower is getting stuck. The latter seems more likely due to it not locking back from time to time, but that might be due to cool-down. Also when in auto, the bolt doesn't lock back, I have to stop firing my burst then fire again for it to lock.

     

    This may be due to sticky followers or gas cooldown, not sure. One of the mags is leaking anyway, are they easy to take apart? Don't see any screws or pins.

     

    Update: When the mag stops feeding, I notice there's a BB stuck in front of the rubber, and in one MP9 the BBs roll out the barrel. So it's safe to say both rubbers are swollen. None of the mags feed regardless it would seem, the followers are still sticky. Might it be the brand of BB too?

  19. UK Spec KWA KMP9 Pictures

    in Rifles (Gas)

    Posted · Edited by AG1212

    Yikes, and I just put the thing back together :P

     

    Thanks for the help!

     

    Only remaining issue is that the bolt won't go fully forward until the hammer is released, I suspect the hop rubber is swollen :/ Think I'll give the Falcon rubber a chance.

  20. UK Spec KWA KMP9 Pictures

    in Rifles (Gas)

    Posted

    I know that Amateurstuntman's MP9 doesn't have any nozzle springs and it works OK. If the barrel is wobbling, have a look inside the fore grip, there should be a screw in there which holds the posts into the lower receiver.

     

    Well I'll find out about the nozzle soon enough. The problem is that I have the railed version, going to be a PITA. Also, for the third time, receiver wobble normal yes or no? :P

     

    Thanks.

     

    If I keep these I think I might find a way to get an M4 stock tube on it....

  21. UK Spec KWA KMP9 Pictures

    in Rifles (Gas)

    Posted

    Thanks guys. What about play between the upper and lower receiver?

     

    Also one of the MP9s came without nozzle springs...(second hand), don't have any gas to see if it can even fire without them. On the same MP9, there is WAY too much play on the barrel, the posts that the bolt/barrel assembly slots into has a lot of up and down movement :/ How is it attached? I saw no screws.

  23. Snoopy's Initial Impressions on the Tokyo Marui MP7A1 GBB

    in Pistols (Gas)

    Posted

    I did a quick chrono: 10 shots fired indoors with 'Cyber Gun Extreme Blowback APS3' gas using 0.20g BBs: Highest FPS 343, lowest: 323.

    Fired less than 100 rounds on that gas and no damage to the nozzle so far, I'm not going to risk it, so going to change to 'duster' gas until upgrade parts are released.

     

    I've tried the Umarex/VFC suppressor, the flash hider has the wrong direction thread, and unfortunately the suppressor does not mount properly to the TM flash hider, guess I will have to wait for an after market one as-well :(

     

    The Angry Gun version works.

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