3vi1-D4n Posted April 10, 2015 Report Share Posted April 10, 2015 I stand corrected. VFC m4 bolt is 210g. The standard vfc buffer is hardly any weight, while h buffer is 80g. A aabb anti bounce buffer is 50g. Quote Link to post Share on other sites
emp3ror86 Posted April 10, 2015 Report Share Posted April 10, 2015 Got a link for that aabb product? I could not find it. Quote Link to post Share on other sites
3vi1-D4n Posted April 10, 2015 Report Share Posted April 10, 2015 http://www.uncompany.com/pageproductdetails.asp?prodid=25351 Quote Link to post Share on other sites
Zereck Posted April 11, 2015 Report Share Posted April 11, 2015 I assume by return spring you mean recoil spring which I already want to buy in the MP7 it's just out of stock. The 417 tough I don't know if any of the m4 springs or buffers are good in it as the 417 buffer is bigger. Quote Link to post Share on other sites
3vi1-D4n Posted April 14, 2015 Report Share Posted April 14, 2015 The intent of my post is to describe the possible causes of weakened FPS during auto fire. Obviously the MP7 has no buffer so you won't be able to add an anti bounce device onto it. However it is possible to add spacers to the spring guide to increase spring tension. Quote Link to post Share on other sites
johnyew Posted April 16, 2015 Report Share Posted April 16, 2015 The ongoing problem I'm having with mine is that the original nozzle O-ring has swelled and jammed the nozzle during prolong firing. Only after about an hour or two, will it return to normal and everything works normal again. I'm a bit disappointed since this doesn't happen to my MP9, GHK AK, KJW M4 and VFC's responses have been underwhelming. I went to a local hardware store and bought O-rings of various sizes to find the best possible fit for it but still haven't found it yet and that makes me not wanting to skirmish with it, which makes me sad considering how much I had paid for it. Would not recommend for first time buyer. Quote Link to post Share on other sites
3vi1-D4n Posted April 16, 2015 Report Share Posted April 16, 2015 HK should have lots of O-ring/Seal places. I get mine from a distributor of industrial O-rings. Most of the VFC M4s do have this issue, so it pays to have some handy. Though the newer VFC M4 bolts don't have such issue. It could be a matter of heating it in an oven to 150*C and re-cure the rubber??? Otherwise superglue makes the O-ring stiffer and stuck onto the blowback piston/unit. Quote Link to post Share on other sites
johnyew Posted April 17, 2015 Report Share Posted April 17, 2015 Hi Dan, Thanks for the tip. I have found a shop that specializes in O-rings but I have yet to find the best size that runs without any problems for an entire day. Once I do, i'll order oil resistant ones from the same shop. Quote Link to post Share on other sites
Zereck Posted April 17, 2015 Report Share Posted April 17, 2015 Well I asked VFC about the RAL8000 version side rails and it turns out that only the Asia version has it, the European doesn't. Umm F you Umarex? Quote Link to post Share on other sites
johnyew Posted April 22, 2015 Report Share Posted April 22, 2015 (edited) G36C short side rails fit perfectly on it. No need to buy VFC specific rails. Edited April 22, 2015 by johnyew Quote Link to post Share on other sites
christhesecond Posted April 22, 2015 Report Share Posted April 22, 2015 Many one solved the misfeeding issue? Mine is firing/cycling beautifully now but misfeeds terribly no matter what hop rubber I put in it? Nozzle is in great condition and alligned nicely. Tried god knows how many different weights and brands of ammo but still the same issue. 2 of my friends having the exact same issue too. Quote Link to post Share on other sites
Cire_ Posted May 1, 2015 Report Share Posted May 1, 2015 Could somebody throw me in the right direction to where i could buy a npas for the vfc mp7? I've found this using google, not sure if it works with the gun tho? http://shop.ehobbyasia.com/ra-tech-reinforced-flute-valve-for-vfc-npas-adjust-tool-set.html#.VUOh3SHtlBc I've also read about some brand called Azimuth, but i can't seem to find it :/ Quote Link to post Share on other sites
vilerk Posted May 1, 2015 Report Share Posted May 1, 2015 If you have access to a lathe, you can modify a WE one to fit: http://forum.gbb-technics.fr/viewtopic.php?f=43&t=3986The one you linked will not work, that is for the RAT VFC M4 nozzle. Quote Link to post Share on other sites
Cire_ Posted May 2, 2015 Report Share Posted May 2, 2015 No, i don't have accsess to any kind of heavy machinery stuff Ok, guess il go for the we smg8 then instead hoping i don't get a lemon Quote Link to post Share on other sites
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