"OK" 500fps Cylinder set..spring???
 

I search over the internet for a while, but I can't find any informations on this...

OK 500fps Cylinder Set For Maruzen Type 96
-Stainless Cylinder
-Stainless Cylinder Head
-Aluminium Spring Guide
-Aluminium Piston
-Upgraded Spring <----------????

(From UNCompany)

What spring is this??

Part of a trade and I would like to know what is it...might drop a softer one in...but not too soft...

That "should" be the same as a about a First Factory 150. I think OK uses its own springs that come with that kit. Ive never seen OK springs sold seperatly so I dont know what rating they give it. You can drop in any PDI or First Factory 9mm spring into it.

thx a lot!

*wink!* just realised my last post was the 100th!!