Strike Industries Sidewinder II BUIS – 45° Offset Black

Description

The Strike Industries Sidewinder Back-Up Iron Sight Version II is the next evolution of the Sidewinder BUIS line. Upgrades informed by competition shooters and military users allow these sights to handle 5.56 and larger calibers while operating reliably in harsher environments. The design provides both 45° offset and traditional inline mounting in a single, low-profile package. Tool-less adjustment dials and the SI-Ambush mounting system make it practical for use with large optics on AR-15 platforms.

Key Specifications

• The windage adjusts in 0.50 MOA increments for precise lateral zeroing.
• The elevation adjusts in 0.50 MOA increments for consistent vertical correction.
• The sight uses a Folding Back Up/ 45 Degree Offset style for quick transitions.
• The frame is constructed from Steel/ Aircraft Aluminum for durability and reduced weight.
• The finish is Black to minimize glare and visual signature.
• Designed for AR Platform firearms and compatible with AR-15 fitment.
• This unit is specified to fit AR-15 platforms.
• The model is designated Sidewinder II.
• Rear apertures include a 1.38 mm small aperture and a 3.5 mm large aperture for varied sighting needs.
• Mounting uses the low-profile SI-Ambush system to clear large optics without added height.

Whether you require a low-snag inline backup for a red dot or an instantly accessible 45° offset for magnified optics, the Sidewinder II offers practical, field-oriented features in a compact package. Its tool-less adjustments, dual apertures, and robust materials make it a sensible addition for users who prioritize reliable, adaptable iron sights on AR-15 platforms.