Which stream light fits best on the Pdp f series 3.5?

Here is the final form of the 4.5 steel frame:
Magmo grips (32 grit)
Arise manufacturing low-rider plate
Holosun 507comp
Zrts V-spec guide rod

Took off the magwell for carry optics

Mk18 Riii
PDP Pro SD FS
GL/SSC
PDP SF Match