Vortex Defender-CCW micro red dot, 6 MOA (model DFCCW-MRD6).  Like new.  It was mounted and tested briefly, and I've found I'm just not a red dot guy.  The dot is bright and works perfectly.
Complete in the original box with everything it came with:
•    Picatinny rail mount
•    1" shim plate
•    Mounting screw sets labeled for Glock MOS, SIG P365XL, and other common pistols (M4x0.7, M3x0.5, 6-48)
•    Vortex adjustment/battery tool and Allen wrench
•    Fitted cover
•    Product manual
•    Battery installed (CR1632)
It was mounted on my Glock 43x, it has the Shield RMSc footprint, so it fits the P365 family, Hellcat OSP, Shield Plus, and other micro-compact optic cuts.  The 6 MOA dot is quick to pick up for carry.  It has 1 MOA click adjustments and a top-loading battery, so you don't have to remove it from the slide to change batteries.
It's covered by Vortex's lifetime VIP warranty, which goes with the optic, not the owner.
New ones sell for around $210 to $250.  Asking $175 cash.  Local sale in the northwest Tucson / Marana area, meeting in a public place.  No trades, please.