If you don't know what you're talking about, you really should comment like you do.

A micro bore line is smaller diameter air line. That's it. They have the EXACT same check valve as standard lines do. The best microbore line out there currently is Ninja's. There were issues with air starvation using cheap overseas 'micro bore' lines, but not with the ninja line.
Oh, and Tippmann's micro bore line is made by Ninja.

Really.

I run a Polarstar. Both Polarstar and Wolverine owners do not run these Tippmann or Ninja microhoses with pinhole slidechecks. We run all big bore air lines either the Redline or Amped with Foster quick disconnects that allow the highest flow for high ROF.

Do your research before flaming.

Research? How about 500k plus bb's through microbore lines testing the tippmann prototypes? Would that be classified as research?
How about actually using and shooting a Tippmann with a ninja microboreremote line with ZERO issues? Would personally knowing the owner of Ninja and hearing right from him that the check valves are identical between both the microbore and standard lines be good?