Kriss USA Defiance Rear Flip-Up Low Profile Steel Sight AR-15 - Black

The Kriss USA Defiance Rear Flip-Up Sight is a precision-engineered low profile back-up iron sight designed for AR-15 platforms. Built from steel with a durable black finish, this is the OEM sight equipped on KRISS Vector SMG and Defiance firearms, giving you factory-original fit and function in a rugged, snag-resistant package.

The extremely low profile design tucks completely out of vision when folded, sitting a mere 14.22mm above the rail so it stays out of the way of any primary optic mounted behind it. When deployed, the sight delivers 75 MOA of windage adjustment through a large, textured knob that produces positive, glove-friendly clicks so you can dial in your zero quickly under any conditions.

A dual-aperture rear sight gives you the right tool for any environment. The 1.5mm small aperture supports precision work and bright daylight shooting, while the 4.5mm large aperture is optimized for low light and close-range engagements. A simple aperture selection knob lets you transition between the two without tools.

This drop-in rear sight mounts to any AR-15 pattern rifle with a Picatinny rear sight slot, making it an excellent back-up iron sight, a primary sighting solution for minimalist builds, or a direct OEM replacement for a damaged or lost unit. Whether you are running a full-length rifle, a short-barreled rifle, or a pistol-caliber carbine, the Defiance rear flip-up delivers reliable iron-sight performance in a compact footprint.