[DarkAngel]

TM P90 4 years and running now

Upgrades are as follows
Guarder Cylinder head
Guarder Cylinder
Modify Nozzle
Guarder Spring Guide
Modify 300fps spring.
Systema Metal Bushings
G&P Metal Receiver.
Systema Turbo Motor
Sanyo 9.6v Jbatt

Using only TM Lowcaps.

My P90 is my CQB High ROF Gun. Keeping it at 300 FPS not only prevents bursts from hurting too much, but also keeps the ROF high.

I havent handled the CA Proline, but the sportline is absolute shite.

The difference between Proline and Sportline is not just the metal body, its the complete overall materials used in the gun. Upgrading the internals will not make up for the rest of the shoddy components you CANT replace.

Overall, CA is pretty good and easily comparable with the TM, and the metal receiver saves you from having to buy an aftermarket one.

Most people think that just replacing the gearbox will fix all their problems, "Oh im gonna upgrade i anyways so w/e" attitude stinks, primarily because if your using clone guns, your dealing with clone parts and tolerances. And it doesnt matter how great your gearbox is if your losing airseal due to your hopup and gearbox not aligning properly.

Take it from someone whos worked on countless guns... clones are nothing but trouble. Whatever money you save on clones, youll be spending on gun doc fees and youll still have the rest of the parts with shoddy tolerances and materials.

Do it right, the first time. Itll save you money and grief on the long run.