Just reading - the description sounds pretty enticing in reference to the RPS and maximum power.
http://www.airsoftparts.ca/store2/in...oducts_id=2080
I've looked at this piston head as well. Ive read so many mixed reviews on the modify made ones, a lot of people claim you loose compression due to the orings they have being undersized.
http://www.airsoftparts.ca/store2/in...roducts_id=779
I've looked at the MASK sets as well (cylinder and piston head), but those would require me to change out my piston which is just extra cash I dont wanna spend.