P90 Cylinder Question?

[Getty]

been using a TM P90 for a while now, and have recently change the spring, but noticed the Cylinder port is at a different height than my CA M15, my questions is what effects do the different height of the port have, do the improve or reduce performance?

[richardy]

Re: P90 Cylinder Question?

neither, it tunes performance. You match the cylinder length to your barrel length so your not carrying around excess air in your gun, which can weigh you down.