Finbarqs Posted May 3, 2012 Report Share Posted May 3, 2012 almost picked one up. Glad I didn't! 1 Quote Link to post Share on other sites
raito Posted May 7, 2012 Report Share Posted May 7, 2012 One thing I found out is this gun destroys bb's... I used Excel '28 and they were literally smashed to bits inside the chamber, switched to KSC and no problems... or was it the other way round? but yeah different brand bb's do matter for this gun to shoot properly Quote Link to post Share on other sites
Brigg Posted May 8, 2012 Report Share Posted May 8, 2012 I sent an email to WGC shop about getting a replacement loading ramp since VFC never responded. They informed me that they have an updated loading ramp with slight modifications to eliminate the jamming problem, so apparently Im not the only one with this problem. Ill let you all know how it works when I get it. Quote Link to post Share on other sites
Finbarqs Posted May 9, 2012 Report Share Posted May 9, 2012 these taiwanese manufacturers apparently never tested their models before sale. It's almost as if they are almost defective before they hit shelf! Quote Link to post Share on other sites
bankz5152 Posted May 9, 2012 Report Share Posted May 9, 2012 Mine shattered - Madbull 9/10 AimTop 7/10 Blaster 5/10 This loading ramp sounds interesting and i'd like to see how it pans out. I so wish VFC would take more time and spend a little more or internals. Fair enough they want to create the most realistic GBBRs but theres no point in having a 95% replica to the RS when it wont empty a mag or shoot 30ft. I think they take the realism too far and don't compromise enough to make a reliable working GBBR. E.g WE/WA externally damn close internally its airsoft and that only which makes for a more reliable weapon. Quote Link to post Share on other sites
Brigg Posted May 24, 2012 Report Share Posted May 24, 2012 (edited) ok, so, I got my new loading ramp, as well as a crusader steel bolt carrier, on the chance that it was the grooves cut in the zinc one that were causing the jams. After a light buffing of the loading ramp and installation of the steel bolt, the gun is once again running smoothly. There is an occasional jam when I perform the "HK Slap", though I can live without that, especially as it is not every time. There is also also occasionally a jam on full auto, but not common enough to cause many issues. So, the gun is once again skirmishable. Im going to keep tinkering with it to try to eliminate all jamming though. Edit: also, oiling the ###### out of the trigger box seems to have helped a lot as well. I didnt realize how dry it was running, so I used some oil (Sewing machine oil in this case, as its lightweight and only contacting metal)., And now a lot of the grinding is gone. Edited May 24, 2012 by Brigg Quote Link to post Share on other sites
Brigg Posted May 29, 2012 Report Share Posted May 29, 2012 (edited) So, Ive been using the Mp5 pretty heavily for the past few days, and its worked pretty reliably, I would say 95% of the time. But it still had the occasional jam. In the interest of SCIENCE, I decided to figure out what exactlty was causing the remaining jams. I took off the barrel, leaving the loading ramp screwed in, so I could see what was going on internally. Then I cocked the gun until it jammed. Looking through the loading ramp from the front, I could see that the loading nozzle was actually rotated a few degrees clockwise, and this was causing it to impact the main body of the feed ramp. A closer inspection of the loading nozzle revealed that one of the tabs inside of the bolt head, which guide the loading nozzle, had broken off. perhaps sheared off when I installed the aluminum cylinder, but how doesn't matter. Long story short, I believe that this has been the underlying problem causing the jamming all along. when I installed the new loading ramp which was bored out wider, it allowed for slightly more play in the loading nozzle rotation, allowing it to jam less frequently then with the more narrow original ramp. However, when the loading nozzle rotated just a bit too much, probably from vibration, it would catch the face of the loading ramp. Ive ordered a steel replacement bolt head, andI will see if this finally remedies the problem completely. It would make a lot of sense though, as it started jamming originally after I had installed all of the upgraded internals. the guide tab could have easily broken without me noticing. So, if anyone is experiencing jams with their mp5 where the bolt doesnt seem to close all the way, as if it has hung up on the loading ramp or a BB, take a quick look at the bolt head and see if both sides of it still have the guide tabs intact. it could just be your problem. Edited May 29, 2012 by Brigg Quote Link to post Share on other sites
Break100 Posted May 30, 2012 Report Share Posted May 30, 2012 Information from the HK shop the new mp5sd3 has better quality including its mag compared to the previous model. I just bought sd3 but has not tested it yet. Will tell you later. Quote Link to post Share on other sites
Brigg Posted May 30, 2012 Report Share Posted May 30, 2012 well, on mine at least, as far as the internals go, after these parts get here, there will be no stock parts left in the gun other then the trigger and the trip levers. Everything else will have been replaced with steel. But, Its at least good to hear that they recognized the problems. Any way you would be able to tell which parts have been updated? Quote Link to post Share on other sites
Finbarqs Posted May 30, 2012 Report Share Posted May 30, 2012 they just need to make a 100% steel internals Quote Link to post Share on other sites
mirrage Posted May 30, 2012 Report Share Posted May 30, 2012 Information from the HK shop the new mp5sd3 has better quality including its mag compared to the previous model. I just bought sd3 but has not tested it yet. Will tell you later. Hmmm...Maybe a good time to sell mine and buy an SD3? Quote Link to post Share on other sites
_akira Posted May 30, 2012 Report Share Posted May 30, 2012 Hmmm...Maybe a good time to sell mine and buy an SD3? how much?... Quote Link to post Share on other sites
mirrage Posted May 30, 2012 Report Share Posted May 30, 2012 Well I am not sure yet but It would be hard to ship it overseas. Not for me but for the buyer who would pay the shipping. Quote Link to post Share on other sites
jay851 Posted June 2, 2012 Report Share Posted June 2, 2012 hi guys quick question for you. can the semi auto lower be modded to fire full auto, is it just a different selector or are there parts missing. need a full auto lower for a project. atb jay Quote Link to post Share on other sites
BaBaBooey Posted June 2, 2012 Report Share Posted June 2, 2012 hi guys quick question for you. can the semi auto lower be modded to fire full auto, is it just a different selector or are there parts missing. need a full auto lower for a project. atb jay You need a few more parts. I have a spare full auto trigger pack if you want it. Please PM me if you're interested. Quote Link to post Share on other sites
Break100 Posted June 10, 2012 Report Share Posted June 10, 2012 The sd3 inner barrel is 300mm shows a good accuracy in semi or even full auto at 10m indoor range. After 3 mags, the bcg seems to be made of cheap metal while other parts still looks fine. No leaks on mag so far. Quote Link to post Share on other sites
Break100 Posted June 11, 2012 Report Share Posted June 11, 2012 After almost 5 mags, the gun failed to shot! although the mag is full, but it only shots twice while the rest is a blank shot. The nozzle seems wont last long. So, it's failed! it's unbelievable. Quote Link to post Share on other sites
1st Commando Posted June 11, 2012 Report Share Posted June 11, 2012 So I finally got mine but what has everybody else done (mainly UK ) to bring these in below 350 fps on green gas ? Quote Link to post Share on other sites
hitmanNo2 Posted June 11, 2012 Report Share Posted June 11, 2012 134a too low? Anyone heard from VFC about any refinements to the MP5? We're on gen 3 G36 mags now and the MP5 seems to be getting neglected. Quote Link to post Share on other sites
Break100 Posted June 12, 2012 Report Share Posted June 12, 2012 Refinement only on its mag. can anyone tell me whether steel bolt carrier is necessary? Quote Link to post Share on other sites
_akira Posted June 12, 2012 Report Share Posted June 12, 2012 Must be a magic combination to get a skirmishable.... but which? Quote Link to post Share on other sites
1st Commando Posted June 12, 2012 Report Share Posted June 12, 2012 134a too low? Anyone heard from VFC about any refinements to the MP5? We're on gen 3 G36 mags now and the MP5 seems to be getting neglected. I'd prefer not to have to resort to 134a as it's sluggish and in consistant . Plus I would like to stick to one type of gas for all my RIFs. I have a RF downgrade valve coming so i'll see how that works out Quote Link to post Share on other sites
1st Commando Posted June 12, 2012 Report Share Posted June 12, 2012 Just to add , I have done a little bit of testing at range and my hop is just not being effective . i'll put some more rounds through it , give it another clean and try and adjust it better on the weekend and report back. Next option will be an aeg hop rubber etc Quote Link to post Share on other sites
1st Commando Posted June 21, 2012 Report Share Posted June 21, 2012 Ready Fighter power valve fitted (0.98J) with enhanced cylinder (TSC) and now running 331 average on propane in the house . That is spot on for my needs I also have a RF loading nozzle stood by in case I need it Quote Link to post Share on other sites
bankz5152 Posted June 22, 2012 Report Share Posted June 22, 2012 Most HK retailers have power adjusting floating valves for sale. Note quite an NPAS its solid set to 300, 330, 360 Quote Link to post Share on other sites
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