[CDN_Stalker]

Well, 450fps is the limit, I actually have a list of parts to get a stock M24 (even an APS2) up to around 440-450fps rather cheaply, have to dig it up.

Takes a bit of searching for this these days, but here it is:

Originally Posted by Stalker

Here's the manual for the CA M24 V2:

http://www.classicarmy.com/showcatal...?acid=111&pg=1

Upgrading to 450fps, I'd recommend these parts (you will need an upgraded cylinder for it, not sure if stock will work with these parts):

Guarder:

Ultra-light Piston for APS2



Piston head for APS2



7mm bearing spring guide for APS2



Clear Hop Up & Bucking rubber



First Factory/Laylax:

PSS2 130SP Spring



Prometheus:

6.03mm 534mm tightbore barrel (needs to trim off about 19mm to make it fit right)



All the above is what I have in my M24 (I have a different spring though, as well as the 9mm spring guide). That spring should give you about 425fps with 0.20g BBs, the tightbore will add another 10fps, and the bearing spring guide another 15fps, bringing you around 450fps.