Installing SP170 spring in PDI Vacuum Piston

[SinisterFresh]

Hi all,

I am installing all of my upgrades, the last thing I have to do is install the spring (SP-170). Should the spring slide into the Piston? The Piston I have is the PDI Vacuum Piston. The pistons diameter is larger or equal to the Piston.

Maruzen L96

[jdogbigmoney]

Yes, the spring should slide into the piston.

[SinisterFresh]

Thank you, I must be buying the wrong spring.

[Jester316]

Bolt action springs and AEG springs are different diameters. Make sure you get a bolt action spring.