[Kos-Mos]

Originally Posted by fabzster

Hi

I would really appreciate some assistance

I have an ICS-30 M16A3 it has according to the specs a 515mm Barrel
http://icsbb.com/web_e/html/02_produ...ind3=24&num=47

Lets see if i have managed to understand the above:

I should upgrade my Barrel to a 6.03 509mm prometheus barrel
http://www.airsoftgi.com/product_inf...oducts_id=1585

and my hopup bucking to a Promethues (Soft Type)
http://www.airsoftgi.com/product_inf...oducts_id=4693

Now i get a little confused re: the cylinder
if i look at http://www.arniesairsoft.co.uk/?filn...andbarrels.htm

the closest one in length is the first one (No Hole Cylinder Barrel Length 450/580 mm)
but under ICS say's non applicable.

Would i need to change the current cylinder to a no port one? does any1 know the standard ver. in my gun?

also is that just the cylinder sleeve or the piston head etc. that would need to be changed?

Maybe some1 could post links to the actual products (That would be awesome)

Remove your upper mechbox (read thread above)
Check on the side of the cylinder, you will see a hole or no hole. You can move the cylinder with your fingers without opening the mechbox, sometimes the hole is placed inside the mechbox to prevent dirt and shit from going in.

If you don't have a hole in there, leave it that way. You don't need to change it for a barrel up to 540mm.

Be careful with the Prometheus rubbers. They work awesome, but sometimes will have some molding scraps at the lips. CAREFULLY cut theses out with a very sharp X-acto. I looked for the reason for jams in a rifle and it was all caused by a hair-thin rubber shaving blocking the BBs.

Madbull barrels are really good. But expect to see a degradation in performance past 50 000 BBs... that might look like a lot, but I know some people that shoot that much in one summer. If you don't intend to keep the rifle for long, or if you are an occasional player, they are very good. The bore is 6.01 vs 6.03 for Prometheus. In an AEGm this won't make a difference in accuracy or range, but might cause jams with cheap BBs (read here KJW or KSC)


ICS guns all use some standard cylinders. The one you saw might have been a bore-up version. Theses are for barrel lenght from 540 to 650mm (PSG-1 barrels). They will also requite a bore-up nozzle, cylinder head and piston head.

If your cylinder is ported, you can just buy any brand of NB (Normal bore) full cylinder. Modify makes awesome parts and can be bought right off airsoftparts.ca.