Haga Defense PS90 Cheek Riser (Gen 4)

The Haga PS90 cheek riser solves the PS90's biggest ergonomic flaw: the factory comb is too low for proper alignment with any rail-mounted optic that sits higher than the integrated 1.5x reflex. Without a riser, the shooter has to crane their neck up off the stock to find the optic, which kills consistency and slows transitions.

The Gen 4 riser adds approximately 1 inch of comb height, which puts the shooter's eye in line with red dots mounted on the HBI or Haga optic mount. The riser is CNC-shaped from premium nylon at 4.3 oz, with an integrated QD sling socket and an M-LOK slot built into the body for additional accessory mounting. Drop-in install using the factory PS90 stock attachment points.

The tradeoff: the factory peep sight is unusable after install. The cheek riser raises the comb above the iron sight line, so shooters who plan to use the factory backup peep need to choose between irons and a proper optic cheek weld. For any PS90 with a serious red dot or magnified optic, the cheek riser is mandatory and the iron sight loss is acceptable.

Available at $107 from FN Specialties or $117.22 direct from Haga Defense.