This is a great valve for the following reasons:
1. It allows you to lower the operating pressure on your gun.
2. It makes the gun more gas efficient.
3. It make the velocity more consistent.
Weaknesses:
It's a lot more expensive than other valves, but I still think it is worth it. Note: you need to have other low pressure components (high flow reg, softer springs, front air chamber, high flow bolt, 98 size air chamber) to maximize this valve's potential.
Conclusion:
Definitely worth the money to lower the operating pressure. I Highly recommend it.
