JP SCS pak

[ffgats]

Hi

I have both the Gen2 SCS for AR15 223 rifle and GMR15 9mm PCC , are both using the same spring , meaning can I purchase the 5 pak and use it either the 9mm and 223? I want to use at least 10-15% lighter to both my 223 and 9mm. Need some clarification and advise on this, btw can anybody point the spring weight from factory to both 223 and 9. Thanks 

did email JP but haven’t heard for a week now

[SteelCityShooter]

I don't think they use the same spring as blowback 9 mm (like the GMR) typically require a much heavier spring than a DI gun.   

 

JP is quite sluggish about responding to e-mails but try calling them directly.  Talk to Ben if you can.  

[ffgats]

Thanks, somebody mentioned not on BE that the 9mm use their 308 spring?

[Smithcity]

Yes, the 9mm uses JPs 308 silent capture springs

[ffgats]

So i can use one of the springs thats comes with the (5pak) for my PCC? Say the 100or 95%, thinking of using the 90-85% for the 223, running adjustable GB on my 223.

[Old3GNR]

I ordered the spring pac and use one of the lighter springs in my GMR-13.