Lowering fps on Pistol?

[Pewpewpetie]

Hi all, I'm new to gas guns and needed some help in lowering my pistol (well dmr'd aap-01) fps. It currently shoots between 470-500fps, I ideally need. It between 430-450 on 0.2g bbs, does any one have any advice 

 

[Adolf Hamster]

shorten the barrel

 

[Dalno]

Yes shorten the barrel, install an NPAS or just use a lower power gas like R144a

 

[Pewpewpetie]

Yes shorten the barrel, install an NPAS or just use a lower power gas like R144a

How much will 144a gas lower it to ruffly?

 

[Alimcd]

How long is a piece of string?

The unfortunate truth is that the pressure of the gas varies with temperature and so your power output will fluctuate accordingly. 
 

You may find that the lower pressure gas creates a new issue and causes the gun to intermittently fail to cycle or vent.

Best solution here, shorter barrel. It’s un-DMRing time