mysl1 Posted January 10, 2012 Report Share Posted January 10, 2012 And you tell me this right after I have ordered OB kit to my CB m4 God *fruitcage* damn it! Quote Link to post Share on other sites
rvlyssup Posted January 10, 2012 Report Share Posted January 10, 2012 And you tell me this right after I have ordered OB kit to my CB m4 God *fruitcage* damn it! LoLz, I think you'll be fine. I have 2 more CB M4s & would have no hesitation in purchasing another OB kit if I ever decided to convert one or both of them. Quote Link to post Share on other sites
kullwarrior Posted January 11, 2012 Report Share Posted January 11, 2012 3 Quote Link to post Share on other sites
Theoutlier Posted January 11, 2012 Report Share Posted January 11, 2012 nice one @kullwarrior!!! just put a shim on mine, catch wobbles no more Quote Link to post Share on other sites
Cephas Posted January 16, 2012 Report Share Posted January 16, 2012 Just posting an in depth review of this review.Some tips and insight from using this gun over the past couple years, using both the open bolt and closed bolt system. Â Part 1 Â Part 2 Quote Link to post Share on other sites
rvlyssup Posted January 16, 2012 Report Share Posted January 16, 2012 (edited) Those are some very good insight into both systems Cephas, thanks for sharing. I am sure that there are some of us out there that still run the old closed bolt system. I did want to add a couple of things if you don't mind in regards to some points you made in part 2 of your video. Â RS charging handles will work un-modded. However, the CH contact point rides on the front part of the plastic nozzle & not in the recessed part of the bolt carrier. A roll pin mod will still be needed, especially if the rifle will be skirmished a lot. This mod is the same on both the CB & OB systems. Â The only difference between the CB & OB trigger systems are the selector sear & the bolt catch. If one is re-using a CB selector sear, it will have to be filed down to clear the notch on the carrier. All WE Tech OB kits include a new bolt catch. Â Alongside RA-Tech, CWI Airsoft (BBDragon) also makes steel trigger parts to work on both WE M4 systems. A bit of caution regarding RA-Tech trigger parts; (unless design has been updated/changed recently) using these parts will require some simple modifications to the RA-Tech bolt carrier to work smoothly. CWI (newer version & exactl copies of the stock WE parts) do not require any modification to work smoothly. Â Lastly @ this time, RA-Tech is the only one who makes a steel bolt carrier for the OB system. I believe CWI is in the process of making one. There is also a member on GGi (GasGuns.info) forums making OB steel parts here in the USA. if one wanted to upgrade from the stock WE Tech pot metal bolt carrier to a steel RA-Tech bolt carrier, modifications to the OB bolt catch will be required. RA-Tech did not exactly copy the stock bolt carrier as the notch for the bolt catch is not deep enough. For obvious (& financial) reasons, modding the bolt catch is a better & easier option than messing with the RAT carrier. If using the stock WE trigger group, modifying the bolt catch will still be required to work propertly w/the RA-Tech bolt carrier. Â After all is said & done, keep in mind that tinkering is pretty much a requirement when it comes to GBBRs. Plug & play enviroment just simply does not exist. Edited January 16, 2012 by rvlyssup Quote Link to post Share on other sites
Reppyboyo Posted January 16, 2012 Report Share Posted January 16, 2012 I believe CWI is in the process of making one. Â Interesting, look forward to seeing that. Quote Link to post Share on other sites
kullwarrior Posted January 17, 2012 Report Share Posted January 17, 2012 A bit of caution regarding RA-Tech trigger parts; (unless design has been updated/changed recently) using these parts will require some simple modifications to the RA-Tech bolt carrier to work smoothly. CWI (newer version & exactl copies of the stock WE parts) do not require any modification to work smoothly.  I've found not to be the case on both my M4 and M16   Lastly @ this time, RA-Tech is the only one who makes a steel bolt carrier for the OB system. I believe CWI is in the process of making one. There is also a member on GGi (GasGuns.info) forums making OB steel parts here in the USA. if one wanted to upgrade from the stock WE Tech pot metal bolt carrier to a steel RA-Tech bolt carrier, modifications to the OB bolt catch will be required. RA-Tech did not exactly copy the stock bolt carrier as the notch for the bolt catch is not deep enough. For obvious (& financial) reasons, modding the bolt catch is a better & easier option than messing with the RAT carrier. If using the stock WE trigger group, modifying the bolt catch will still be required to work propertly w/the RA-Tech bolt carrier.  That is the first batch of the bolt catch on open chamber  I've purchase WE M16 RA-Tech custom works smooth as silk, no bolt catch or carrier mod was done, I chuck that m16 carrier into my M4, same thing, vice versa. New open-chamber kit's bolt catch is the same, no mod needed. Essentially I have (A) RA-Tech WE M16 w/ Steel Carrier (B)RA-Tech WE M4 w/ Steel Carrier (very minor mod on carrier)  (1) M4 Bolt catch -modded (RA-tech from WE M16) (2) M16 bolt catch -unmodded (RA-tech from WE M16) (3) CQBR conversion kit bolt catch -unmodded  Trials... (A) w/ (1) noticibly more friction, but works (A) w/ (2) smooth as silk (A) w/ (3) smooth as silk) ( w/ (1) noticibly more friction, but works ( w/ (2) smooth as silk ( w/ (3) smooth as silk   Conclusion, both RA-Tech and WE bolt catch have change, and they're now drop in -atleast for my case. Quote Link to post Share on other sites
NonEx Posted January 18, 2012 Report Share Posted January 18, 2012 (edited) kullwarrior: Thank you so much for explaining that fix to me, in my next order I will add some shims and fix the horrible wobble of the bolt catch and hopefully fix the issues I am having  Cephas: Very good videos man, lots of good information and you presented it well. I would have enjoyed the videos more if the picture quality was better (white balance and sharpness mostly), but the information was great!  I hope to upgrade my DSLR to a model that can shoot video sometime soon and then maybe I will show of my WE M4 as well Edited January 18, 2012 by NonEx Quote Link to post Share on other sites
rolling-thunder Posted January 18, 2012 Report Share Posted January 18, 2012 (edited) Originally i signed up to this thread because i wanted a GBB M4 but wasn't sure if i should buy the M4 or the SCAR.I ended up going for the SCAR but still wanted the M4. I'm getting myself an M4 early next month so this thread with all it's advice & fixes has turned out to be really useful to me.The M4 i'm getting is a closed bolt version coming with 4 magazines.I now have a local source for CO2 magazines here in the UK & eventually i'll be converting the M4 to an open bolt{probably with a month or two}. I'm really looking forwards to getting the M4 confident that i can sort any minor niggles.Thanks to everyone who posted advice,it has been taken on board & will be put to use. Edited January 18, 2012 by rolling-thunder Quote Link to post Share on other sites
Reppyboyo Posted January 23, 2012 Report Share Posted January 23, 2012 I have now joined the WE M4 guild. (yay!) Well technically. Got a Socom gear Novenske 'N4' which has been converted to OB. Â Already converted 2 mags to p-mags. Â Anyway, can anyone bullet point the /recommended/ mods and fixes? I know to shim the bolt catch (although the p-mags activate it well) and the previous owner already has a 'magic pin' at the front. Â Internals will mostly remain stock until something breaks/wears out. Â The externals will get an over-haul however Quote Link to post Share on other sites
DRAGON64 Posted February 22, 2012 Report Share Posted February 22, 2012 I'm about to be a WE convert, and I'm looking at the M16A3. From what I can tell, much of the 'major' malfunctions of the we M4 line have been addressed with the release of the open bolt design (v3), which is what Evike is peddling here Stateside. Tell me, is the fun factor starting to surpass the money spent on these platforms? I do not need another safe queen or a failure prone rifle... I have placed that rifle in my 'cart' so many times... even placed all of the CC info, but I keep backing out to do more research. Quote Link to post Share on other sites
Grindstone Posted February 22, 2012 Report Share Posted February 22, 2012 I've been trying to remove the pin for the bolt catch, but it simply refuses to budge, even when pounding on it with a hammer. Any advice? Quote Link to post Share on other sites
rvlyssup Posted February 22, 2012 Report Share Posted February 22, 2012 @ grindstone, just look closely at the pin, one side is knurled. Tap fron the non-knurled side w/the rifle on its side. In case there is loctite, heat it up w/a lighter. Quote Link to post Share on other sites
rvlyssup Posted February 22, 2012 Report Share Posted February 22, 2012 @ grindstone, just look closely at the pin, one side is knurled. Tap fron the non-knurled side w/the rifle on its side. In case there is loctite, heat it up w/a lighter. Quote Link to post Share on other sites
Reppyboyo Posted February 22, 2012 Report Share Posted February 22, 2012 I'm about to be a WE convert, and I'm looking at the M16A3. From what I can tell, much of the 'major' malfunctions of the we M4 line have been addressed with the release of the open bolt design (v3), which is what Evike is peddling here Stateside. Tell me, is the fun factor starting to surpass the money spent on these platforms? I do not need another safe queen or a failure prone rifle... I have placed that rifle in my 'cart' so many times... even placed all of the CC info, but I keep backing out to do more research. Â Fun factor has always been there. The Open bolt series is fairly reliable though. Trigger pack will eventually go but there are plenty of upgrades/spares about. Â 30rd m4 mags are still a pain in the *albatross* but the shorty mags are solid. Quote Link to post Share on other sites
DRAGON64 Posted February 22, 2012 Report Share Posted February 22, 2012 Fun factor has always been there. The Open bolt series is fairly reliable though. Trigger pack will eventually go but there are plenty of upgrades/spares about. Â 30rd m4 mags are still a pain in the *albatross* but the shorty mags are solid. Â Thanks Reppyboyo I went ahead and ordered the rifle and 4-spare mags. Evike had a coupon code for 18% off my order, which indicated to me that the choice to order was almost to good to be true...so I hit the send button. I won't get the rifle till sometime next week, so now the waiting... Quote Link to post Share on other sites
calbur20 Posted February 23, 2012 Report Share Posted February 23, 2012 One thing that I find annoying with the new OB system is the lack of spares. The infamous part 66 still breaks (it did it for my G36) and I still can't find spares for it. Quote Link to post Share on other sites
Mr Foxhound Posted February 24, 2012 Report Share Posted February 24, 2012 (edited) Do you guys know if theres any video on how to adjust the hop up on the open bolt WE M4s or any detailed explanation on how to do it? Â I heard its pretty difficult so dont want to mess anything up. Any help would be great. Thanks! Â If not maybe one of you WE experts should make a youtube video of it. I Know I'm not the only one asking about it. Edited February 24, 2012 by Mr Foxhound Quote Link to post Share on other sites
Reppyboyo Posted February 24, 2012 Report Share Posted February 24, 2012 Stick allen key in grub screw adjuster. Turn right for hop. Left for no hop. Â Easy. Quote Link to post Share on other sites
Mr Foxhound Posted February 24, 2012 Report Share Posted February 24, 2012 (edited) Where is this screw loacated? Picture? Â Sorry for asking, but the manual dosent show how to adjust hop up at all for some reason. Edited February 24, 2012 by Mr Foxhound Quote Link to post Share on other sites
Theoutlier Posted February 24, 2012 Report Share Posted February 24, 2012 1. remove Upper from lower 2. take out the bolt 3. look inside, it is a tiny key-hole located just above the Hop-up chamber. Quote Link to post Share on other sites
Reppyboyo Posted February 24, 2012 Report Share Posted February 24, 2012 Alternatively use a ball end Allen wrench and do it through the ejection port. (lock the bolt back and have the charging handle back.) Â Quote Link to post Share on other sites
Mr Foxhound Posted February 24, 2012 Report Share Posted February 24, 2012 I have an RA tech NPAS in the little hole. Does that change how it ajusts? Quote Link to post Share on other sites
kullwarrior Posted February 25, 2012 Report Share Posted February 25, 2012 I have an RA tech NPAS in the little hole. Does that change how it ajusts?  I'm not sure how your logic works, NPAS is a flute valve, it sits in the nozzle. last time I check, nozzle must be able to seperate from the hopup chamber so that bb can be insert into the barrel. I think that answers your question     yes, NPAS has nothing to do with the adjustability ot hopup 1 Quote Link to post Share on other sites
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