HB Industries PS90 Low-Profile Optic Mount

The HB Industries PS90 optic mount is the right answer for a direct-mounted modern red dot on a standard PS90. The mount is CNC-machined from 6061-T6 billet aluminum, hardcoat anodized, and drops in using the factory threaded holes on top of the PS90 receiver, no drilling or modification required. It is not compatible with Tri-Rail P90/PS90 variants. The base presents multiple optic footprints, which means a Trijicon RMR / SRO, Holosun 507C / 509T, Aimpoint Micro / Acro, Trijicon MRO, Holosun AEMS, Mini ACOG, or Leupold DPP can mount directly without adapter plates.

The value here is height. The factory PS90 ships with an integrated 1.5x reflex optic in older units or a Picatinny rail in current production. Both sit high relative to the cheek weld, which forces the shooter to crane upward to find a low-mount red dot. The HBI mount sits much closer to the bore, which puts the optic in a natural cheek weld position and improves transition speed under stress.

Weight varies by footprint; the RMR version is 1.98 oz. At $104 it is the cheapest path to a properly-mounted modern optic on the PS90. Pair with the Haga cheek riser if a co-witness or higher hold is needed for a magnified optic configuration.