tippmann 98 custom ps act 14 inch j and j ceramic, car stock, egrip, cyclone feed
Inertia, visible impact
How you have to unscrew your gun to install the flatline.
I got my quick thread flatline for my B day last year for $80. It can shoot far but it is very hard to clean because you have to unscrew the gun to get the barrell of. It does chop some balls and when it does it is imposible to shoot strait.