Strike Industries Sidewinder II 45 Degree Offset Folding Backup Iron Sights - Black

The Strike Industries Sidewinder II is a 2-in-1 backup iron sight (BUIS) that gives an AR-platform rifle both a traditional inline sight picture and a 45-degree offset sight picture from a single unit. When your primary optic goes down or you simply need a fast secondary aiming solution, the offset position puts your iron sights on the same focal plane as your red dot, holographic sight, or low-power variable, so transitions are quick and intuitive.

Built around Strike Industries' low-profile SI-Ambush mounting system, the Sidewinder II clears even large optics while keeping the sight body tucked close to the rail. The sight is folding, so it deploys and stows cleanly without snagging, and a single unit provides both inline and 45-degree offset capability instead of forcing you to run a separate pair of offset BUIS. This unit is in New condition and is ready to mount on any standard Picatinny top rail.

Construction uses a combination of steel and aircraft aluminum finished in black, keeping the assembly light at roughly 3.4 oz total while staying rigid under recoil. Both the front and rear sight are adjustable: the rear sight handles windage and the front sight handles elevation, with each click moving the point of impact by 0.50 MOA. Tool-less adjustment dials let you zero without hunting for a wrench or coin in the field, and both the front and rear offer dual aperture options so you can run a smaller precision aperture for longer work or a wider CQB aperture for fast target acquisition up close.

Designed to fit any AR-15 with a standard Picatinny rail, the Sidewinder II is an ideal primary iron sight on a minimalist build or a reliable backup on a heavily accessorized carbine.