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XTI2 45 Degree Offset BUIS Gen 1 Upgrade Kit

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Already own an XTI angle offset sight set and want to upgrade to the XTI2? This kit includes the improved base design that raises the sight picture up, allowing visibility around wider lens optics, while maintaining a standard cheek weld. Uses existing cross screws, base clamps, rear sight blade, and front sight blade. A spare front sight detent plunger and spring are included in case they disappear upon disassembly of the original XTI front.
XS XTI2 sights are a close-quarters, secondary sighting solution for a fast sight transition from a magnified primary optic. XTI2 sights reduce target engagement time and eliminate magnification adjustment. Our second generation XTI’s feature taller bases for easy sight alignment, without having to break a standard cheek weld. Additionally, the base angle has been increased to accommodate wider lens optics.


  • Rear Sight Windage Adjustment - Rear sight is driftable allowing easy windage adjustability
  • 6061 T6 Aluminum Bases - Keeps rifle weight as light as possible
  • Fully Ambidextrous - Front and rear sight can be rotated for left handed shooting
  • Life Time Warranty - No Questions Asked Sight Warranty
  • Easy Bolt on Installation - Top rail installation allows for fitment on all optic ready AR-15 rifles
  • Item Number: AR-9901-1

Kit does not include XS Block


WARNING-Cancer and Reproductive Harm –