Red Dot Sight SpecificationsDot Size: 3 MOASight Window (WxH): 946" (24.02mm) X .604" (15.34mm)Optics: 100% Parallax Free, Anti-Reflective Coated, Glass LensExtreme portability in a formidable package. The FN PS90 is chambered in 5.7x28mm, and is both ergonomic and fully ambidextrous. Accuracy is maximized through the combination of blowback operation and closed-bolt firing. The barrel is MIL-SPEC, cold-hammer forged, incorporates a muzzle brake, and at 16.04" in length is civilian-legal. Models are available with 10- and 30-round polymer magazines. Specifications: Sliding trigger Forward handstop Bottom ejection port Enlarged trigger guard Translucent polymer body Magazine Capacity: 10 or 30 rd. Ambidextrous charging handles Ambidextrous magazine release Synthetic thumbhole bullpup design Hammer-forged, chrome-lined Barrel Molded-in rear sling attachment point Alloy upper receiver and barrel support Operation: Closed bolt, blowback, semi-auto Ambidextrous safety switch inside trigger guard MIL-STD 1913 accessory rail and back-up iron sights FN PS90 Carbine Standard Blk 5.7x28mm 16" 30rd Rifle w/ Red Dot Sight 3848950465