Ok, I replaced the nozzle
change the tappet plate
replaced the the hop up bucking
tried 3 different mags
hop up dialled wide open and gradually dialled down
gearbox fires smooth
All this and still the Same problem, shoots great upside down in semi. Shoots like shit right side up
BB's roll out, or spits them out, shoots out two or jams.

Sooooo baffled by this.

That's very strange. Are you sure the mags are pushing the BBs into the loading tube? Because if you have a half-@$$ed spring in your mag that kinda half-pushes the BBs in, those get jammed. Check the BBs that fall out for signs of wear (E.G. Chips, dents, cracks, etc.) because that's a telltale sign that something's misaligned, whether the BB or some internal part(s).

Are you noticing any chips of BB's coming out when it double/multiple feeds?

How tightly do the mags fit in the magwell? Does it make a difference right-side-up if you hold the bottom of the mag (pushing up) while firing?

Are you sure the mags are locking in properly? With the ICS SIG, you can get a click and a lock without the mag sitting properly.

I have a similar problem, but I have yet to test whether turning the gun ud will correct the issue. Please forgive my n00b post, as I just switched from paintball and tippmans to Airsoft.

I purchased my ICS 552 used, but in great conditions. The gun has probably fired about 10,000 rnds, no more. It worked perfectly with a Nunchuck 9.6V battery, but I had to tape it under the handguard which was ugly and uncomfortable. Lately, it misfired a little. Once every 100 rnds perhaps.

Got a triple cell 11.1 12C Li-Po for it a month ago (only 3ple cell available since the FoxConn factory fire). The ROF went through the roof, WHEN IT ACTUALLY SPITS A BB. It will sometimes spit 15 bbs, and then misfire a whole lot. Winding up the mag a LOT when it does that sometimes improves the feeding. Sometimes it doesn't.

I only have the original HiCap mags. If I slide the output tab whilst wound, both will spit out half the staged bb's. I do not know it this is OK or less than optimal.

Last night I opened the gearbox, and all the metal gears seemed to be teethed right, with little or no detectable wear. I did notice there were no bushings, just washers, which seems to be by design. There was little grease on them so I added just a bit of vaseline to the gear teeth, and some silicon lube. Then squeezed a 2 second full auto burst, and it fired ok.

Today, went to the field with both batteries in, and the next Li-Po burst was a dud. Misfired half or more of the shots. The 9.6 fired much slower, and much more reliably.

I've read that the ICS stock mags are crap, and I should get me a MAG or TM mags, file them down, and try them on.

Before I go an order some mags, does this sound like a mag problem to anyone please?

Thanks in advance for any helpful replies.

Way back when I had an ICS 552, I found the highcaps were garbage. As with all highcaps, really, but the SIG oneswere exceptionally bad. I was lucky to even have BBs coming out of the barrel with them. I've never had a Marui magazine misfeed at all once it's been properly modded for it, though.

I'm a big fan of the G&G mags now, since they have this amazing little follower. I guess I'm easily impressed.

@ tarobear, how do you properly mod the TM mags, maybe thats the problem. I did shave the nib that held the BB's from shooting out and thats about it.
I still can't get mine to shoot properly even after ordering a new Hop up....I thought mine maybe warped since it only shoots upside down.

To be honest, the first mags I had modded when I still had an ICS was done by a gundoc. Later on, a buddy did them for me. It's been a long time since I've sold the ICS SIG, but if I recall correctly, the ICS mags are "reversed" from Marui magazines. Compare a stock Marui magazine and an ICS magazine and you'll see what I mean. From what I understand, you can disassemble the Marui magazine and sort of flip the top around, then shave it down a little. Don't hold me to it, though.

I think I'm finally at the point where I'd be comfortable taking apart my own mags, but fortunately, G&G SIGs seem to be able to accept both types of mags, so I don't need to.

I'm not 100% certain but I believe the ICS sig has a proprietary nozzle, I think it's slightly longer. If it's been replaced that could be the issue.

Edit* I know you were talking about Marui mags but this is how I got my mag brand mags working nicely in my ICS sig if it helps.

http://www.airsoftcanada.com/showthread.php?t=117937

Ultimate solution: Buy a G&G instead :p

No way... you can't beat the ICS for the price they're going for these days. You'd have to be nuts to buy a G&G either that or live in Saskatoon :D

Open up a mag????
 

@Taro: Uggg, I have seen a couple broken mags and I'm not sure I want to deal with the prospect of a mile of loose spring coil... :eek:

@Styrak: I think I'd buy me a Magpul Masada before going with the G&G Sig.

@Kozzie: Yes, I saw a Youtube video where they compared TM vs ICS gearboxes, and everything but the nozzle and hammer were the same. The TM plunger had holes in it and the ICS nozzle was longer.

So in summary, does anyone sell mid or lo cap mags for ICS Sigs?

According to their website ICS makes lo-caps but I've never seem them for sale anywhere. Just get the mag brand 100rnd midcaps. It takes all of 2 minutes per mag to mod them and it's dead simple. The G&G are supposed to be better but I haven't had the pleasure of getting my hands on one.

A G&G is much higher quality. But I digress.