I have either shot extensively on a T&E or owned an SRO, Acro P2, Holosun 509T, & a 507.
All are or were on duty or off duty pistols.
The SRO is bombproof, extra large lense, but open emitter.
The Acro was very nice but I slightly prefer the 509T
The 507 is basic & open emitter. Its compact size has earned it a spot on my off duty rig.
We sight our staff in at 25 yards.
The important thing to remember is that a RDO is a “target focus” sight with both eyes open. Its takes a lot of reps to become proficient in its use.
The same goes with the draw, our RDS transition is a 3 day process. It could be more..
Dry drills are great for reps if you don’t have unlimited ammo.
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