Killbucket Posted March 3, 2009 Report Share Posted March 3, 2009 Over the years, I've made up bunches of these for locals, but never bothered to package then up. The stock mag on the clone (and the guns that inspired them) M's have notoriously balky feeds on them. After a lot of MIT (Mistakes I've Tried) testing, this is what works: http://air-sharp.com/shopcart/product_info...bf5d457bf7873f2 Link to post Share on other sites
[BS]_MARS Posted March 3, 2009 Report Share Posted March 3, 2009 I'm a little apprehensive... I don't doubt they use a terrible spring, I can see that on mine, but does it really make THAT big of a difference? I'd love to see a video where you just swap out the stock spring for this one. Thanks Killbucket! Link to post Share on other sites
TheFull9 Posted March 3, 2009 Report Share Posted March 3, 2009 Would certainly be interesting to see these at work, I've not had any problems yet with the feed springs on mine, though I can see they're probably fairly vulnerable to being pulled out of shape. Link to post Share on other sites
Killbucket Posted March 3, 2009 Author Report Share Posted March 3, 2009 The swap takes a few moments to do, as you probably know already. And it's cheap enough to cobble together yourself! Make up your own: McMaster-Carr # 966K49 spring McMaster-Carr# 3038K192 silicone DIY version full instruction Even after posting the DIY, I've had MANY requests for the parts ready to go in, so I finally got time to do up packaging, etc. The big differences are there are no internal steps in the BB path where the spring changes size at the ends, and the stock spring is made of thicker wire, which makes for bigger "notches" between coils. The stock spring takes constant fiddling to work. I've seen this on no less than 14 guns now. Every single one became reliable after this simple mod. Link to post Share on other sites
ThaFlash Posted March 4, 2009 Report Share Posted March 4, 2009 No doubt, that spring is a huge weakness of the 249 boxes for exactly that reason. And the stiff spring tends to take sharp bends which is more likely to hang up the BB's. Link to post Share on other sites
Peanut Posted March 4, 2009 Report Share Posted March 4, 2009 Nice one Killbucket, order sent. Link to post Share on other sites
DyNo! Posted March 4, 2009 Report Share Posted March 4, 2009 The swap takes a few moments to do, as you probably know already. And it's cheap enough to cobble together yourself! Make up your own: McMaster-Carr # 966K49 spring McMaster-Carr# 3038K192 silicone DIY version full instruction Even after posting the DIY, I've had MANY requests for the parts ready to go in, so I finally got time to do up packaging, etc. The big differences are there are no internal steps in the BB path where the spring changes size at the ends, and the stock spring is made of thicker wire, which makes for bigger "notches" between coils. The stock spring takes constant fiddling to work. I've seen this on no less than 14 guns now. Every single one became reliable after this simple mod. Do you mean #9664K49? Spring-Tempered Steel Cont Extension Spring 36" Length, 5/16" Outside Diameter, .028" Wire In stock at $3.36 Each Link to post Share on other sites
Killbucket Posted March 4, 2009 Author Report Share Posted March 4, 2009 Do you mean #9664K49? Spring-Tempered Steel Cont Extension Spring 36" Length, 5/16" Outside Diameter, .028" Wire In stock at $3.36 Each Yes, I did, sorry, the new glasses failed me. Link to post Share on other sites
tosuzu Posted March 4, 2009 Report Share Posted March 4, 2009 Thank you killbucket Link to post Share on other sites
Hokus Pokus Posted March 5, 2009 Report Share Posted March 5, 2009 From my experience with Air Sharp: Add at least two months to any amount of time they quote you for receiving an item. Since this one has no wait, expect to wait at least two months. Expect a response to every other one of your e-mails. Expect responses to be pointless, only answer part of your question, and be completely without professionalism. Expect the item to be cheaply made from cheap materials, require modification and/or be missing pieces. Link to post Share on other sites
Killbucket Posted March 5, 2009 Author Report Share Posted March 5, 2009 I guess I need to prove you wrong... Link to post Share on other sites
Roman Posted March 5, 2009 Report Share Posted March 5, 2009 Hmmm, guess I will have to order one to try it out. I actually have the mag, but LOST the spring feeding tube! Link to post Share on other sites
Killbucket Posted March 5, 2009 Author Report Share Posted March 5, 2009 Gracias. Link to post Share on other sites
Killbucket Posted March 5, 2009 Author Report Share Posted March 5, 2009 I'd LOVE to show an install - but I gave away my M249 last year, on this Forum. "Old airsoft guns need love too". I still have the original spring (why give away a known headache?), so the replacements are EXACTLY the correct size. First 12 orders go out in a few hours, all DOUBLED (Please thank the man for calling me a clip-joint). I own the home at 8273 Holly Oak, Citrus Heights, CA, 95610. I'm not going anywhere. I'm forgetful (not a huge structured org. here, just one guy, just like you), but not evil. If you have an issue with an order, let's deal with it here, and see where it goes. And yes, I'm finally getting some extra M2 bodies free for keeping some past promises. Link to post Share on other sites
Hokus Pokus Posted March 6, 2009 Report Share Posted March 6, 2009 Keeping a promise? I still have the e-mail from four months before I received my M2 stating I would get a handful of extras with it for the headache. Still waiting on that, and yes, I did remind you at about the time when you started ignoring my e-mails. P.S. The long barrel for the M2s are for display purposes only. Just try to find that on the website. Link to post Share on other sites
Killbucket Posted March 6, 2009 Author Report Share Posted March 6, 2009 OptravisPrime. Gonna get a new chassis to you, which address? The newer barrels are reworked to make them usable in battle- the front cap slips on and off. Link to post Share on other sites
Rapier Posted March 9, 2009 Report Share Posted March 9, 2009 Just a quit tip, another part of the problem with the stock a&k box mags are the power supply. 3v (2 AA cells) just can not keep up with the gun. I added a tamyia conector and an 8.4v mini pack and it feeds like a charm now, even on the local ca problem child (fires so fast even high cap mags don't keep up) Link to post Share on other sites
Peanut Posted March 9, 2009 Report Share Posted March 9, 2009 Just a quit tip, another part of the problem with the stock a&k box mags are the power supply. 3v (2 AA cells) just can not keep up with the gun. I added a tamyia conector and an 8.4v mini pack and it feeds like a charm now, even on the local ca problem child (fires so fast even high cap mags don't keep up) Are you feeding the sound switch or is it constantly running or wired into the trigger? I ask as I'm interested in improving my box mag. Thanks Link to post Share on other sites
Killbucket Posted March 18, 2009 Author Report Share Posted March 18, 2009 Those sound switches never worked well for me on anything, and I hate holding a button in to feed BB's. You end up holding the button all the time anyway. I wire everything so if the gearbox gets juice, so does the ammo feeder. Skip worrying about over-winding, unless the guns isn't firing, of course. If you've seen any of my videos, the ammo feeds don't have problems running constantly. Link to post Share on other sites
uscmCorps Posted March 18, 2009 Report Share Posted March 18, 2009 Those sound switches never worked well for me on anything, and I hate holding a button in to feed BB's. You end up holding the button all the time anyway. I wire everything so if the gearbox gets juice, so does the ammo feeder. Skip worrying about over-winding, unless the guns isn't firing, of course. If you've seen any of my videos, the ammo feeds don't have problems running constantly. Completely unrelated to spring kits... but relative to your last comment, I REALLY wish auto feed ammo boxes were made for the G&P M249 series. Mine require the push button pressure switch which is a serious annoyance. And a smaller box mag would be awesome too. Link to post Share on other sites
Peanut Posted March 18, 2009 Report Share Posted March 18, 2009 OK folks heads up. I just received my spring from Killbucket. Great service from Ian with regular mails on order status and he added some very nice extra's to the package. The spring, although not the most inspiring accessory, is streets ahead of the A&K standard spring. Will fit it and test soon and add some feedback on it's performance. Link to post Share on other sites
uscmCorps Posted July 4, 2009 Report Share Posted July 4, 2009 The swap takes a few moments to do, as you probably know already. And it's cheap enough to cobble together yourself! Make up your own: McMaster-Carr # 966K49 spring McMaster-Carr# 3038K192 silicone DIY version full instruction Hey Killbucket, what purpose does the Silicone Tubing serve? Just curious as I'm hoping to use the spring tubing to convert my GWS Bizon HiCap Magazines into Standard Capacity magazines. Also, how tight a curve can you make out of the spring and still have it functional? I'm working in pretty tight spaces and need a 90° turn to be able to feed from a horizontal M1A1 magazine into the AK HopUp unit's BB Feed. Thanks for the info BTW! Link to post Share on other sites
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