should it do that sound on any well shimmed gearbox, when you ajust the motor? (for exemple on a version 2 mechbox....)

cuz I'm not really sure how it should sound a well ajusted motor on my hk416...

As quiet as possible (definitely no grinding sounds!), that's the perfect spot.

Personally I'd be careful with this. My Cybergun 552's motor depth adjustment actually doesn't work. Not sure why, it just doesn't work. I don't know if this is a general flaw with all the Cybergun 552's, or if it's just mine that decided to be a hunk of crap. The screw turns and turns and turns, but no adjustment is made. I'm considering just superglueing the damn thing to the little square and fixing it that way.

Oh man well now I have my options ahead of me. A full rebuild for my guns intestines huh? This is starting to sound like a real hobby (the kind that gets you in debt, late for work, dumped or divorced):)

Don't feel like you have to do all that I did; it was just to suit the gun to my personal needs, as well as I'd rather take it all apart once and do the job right the first time. And try to avoid those nasty things, though debt IS manageable. This is a hobby, not an addiction...or is it?

Ya... That question surfaces from time to time. I have financed guns for most my squad... At any rate I plan to get the hop-up, tbb, nozzle, piston and cylinder done by July. Then get the spring gears and motor to my desired point.

How Tight a barrel for say M4 size (I'm covering it with a silencer) and is madbull goona be alright or should I hold out for something else? I was thinking 6.03 or 6.04 so will I want one over the other?

I used to use a 247mm 6.03 Tightbore Madbull, and I've ordered a 455mm (M4 length, I believe) 6.03 Tightbore Madbull. I'll post my personal liking of it on Tuesday/Wednesday when I recieve the parts. I assume it'll work out just fine. I love my 247mm tightbore, and even after the accuracy upgrade, I'm still keeping that barrel for a CQB parts loadout.

Ya another thread has helped me decide on 6.03 as well, do you use regular bbs or specialized 'precise' bbs? As well 0.20g or 0.25g?
I tried both but only noticed a difference in range, and groupings at a distance. I like 0.25g groupings but I like range as well.

I use only .28 BBBastard or Madbull BB's for indoor and outdoor; I have MadBull 6.03mm tightbores in both of my AEG's. I find it a good balance that keeps accuracy for long distances while still travelling far. I suppose a .20 BB would go farther, but what good is it if you can't control where it goes?

Thanks alot dudes goona order this stuff monday so... any idea if the box on the SIG is 6mm or 7mm?

6mm

Thanks Buzzrexx time to spend money!
ordered from airsoftparts.ca
G&P Zombie Killer Silencer
MA 6.03mm Stainless Tightbore 363mm
Mad Bull 60 Degree Normal Bucking Hop-Up Rubber Set
Modify Cylinder Set - M4A1/M4RIS/S-System/SR-16

Sorry to take so long putting in my upgrades.
Got my tbb in and tried it with the new madbull hop up and it shit a brick, just spits them like 20 feet. The stupid hop up is like less than a mm thicker yet it moves the diameter what seems like a cm! ARG! But ya put the old black one on and it shoots beautifully, the stock black one is an h-nub and I heard good things so I'll game it until it fails. The Zombie Killer silencer is dope! and gives it a distinct sound, no suppression though. Have yet to open the mech box but I'll post afterwards, anyway I have no gear greese or cylinder greese so I guess this noob needs schooling!

Personally I used the blue Mad Bull bucking sleeves you're talking about. In a SiG's hop-up, they don't fit. They're too thick. Even dabbing some oil on them doesn't effectively get them in, and the only time I got one in, it gave me problems. I'd highly suggest just sticking with the black one for now. I'm not entirely with it when it comes to buckings, but for the most part a lot of people recommend the Gaurder Clear bucking sets. Apparently they work like magic, but it also says below 400fps, so until you upgrade to at least 350fps with 0.20g BBs, I'd hold off on the clear bucking, as from what I've heard with Amos, if you have a mismatched bucking in accordance with your FPS, you get some messy accuracy.

Thanks Roko, I tore one of the blues then greased the second to slide in. Although I couldn't get the C-clip to go on I still assembled the unit and had the shittiest range (20ft if lucky) so I cleaned my hop with Isopropynol and tried again. I work and gig part time so it was like tore the first one, wait a few days. Put in second, wait a few days. Find out it sucks, wait, replace, wait, find out its a success then post! Ha ha!

Anyway Roko I read your thread and was wondering if you used anything in the silencer to steady the barrell or if it just floats. My 363 mm is floating and I think I want it more stable, any suggestions? Oh ya I will be painting and posting pics once grease gets to me... Maybe wait a few days between...