The XS Sights XTI2 45-degree offset BUIS in the DXT configuration with a big white dot (brand part no. AR-0008-5) is a pair of offset backup iron sights for an AR-15 that carries a magnified optic. XS Sights mounts them at a 45-degree offset for a fast transition from a magnified primary optic, with no magnification adjustment. The front sight has a tritium lamp, and the rear sight is a tritium bar. The base is machined from 6061-T6 aluminum, and the sights are CNC steel. They bolt to the top rail of an optic-ready AR-15.

Key Specifications

• The front sight is a big white dot, the dot size that suits your preferred sight picture.
• The front sight is tritium powered, a beta-emitting lamp that glows in low light to aid alignment.
• The rear sight is a tritium bar, so both ends of the sight picture stay visible in the dark.
• The rear sight is a V-notch, a low-profile V that gives a wider view downrange of the front sight.
• The sight picture is the dot-the-i, a straight-line picture with distinct front and rear sights.
• The rear sight is driftable for windage, so it can be adjusted after zeroing.
• The set weighs 2.04 ounces, which adds little to a rifle.
• The bases are 6061-T6 aluminum and the sights are CNC steel, a durable combination at low weight.
• The sights are fully ambidextrous, as the front and rear sight can be rotated for left-handed shooting.
• The mount is a top-rail bolt-on that fits all optic-ready AR-15 rifles, and the kit includes a hex wrench, front sight tool and blue threadlocker.

Frequently Asked Questions

What is the difference between the DXT and DXW versions? On the DXT the rear sight is a tritium bar and the front sight is tritium too. On the DXW the front sight is tritium but the rear sight is a non-tritium white stripe.

Can I use these on the left side of the rifle? Yes. The maker states the front and rear sights are fully ambidextrous and can be rotated for left-handed shooting.

How do I set up the rear sight? The rear sight ships installed but not sealed to the base so you can adjust windage. The maker says thread locker must be applied after the rifle is zeroed, and the kit includes blue threadlocker.

Buy the XS Sights XTI2 45-Degree Offset BUIS, Big Dot, Tritium Front and Rear (DXT)

Offset irons let a rifle with a magnified optic handle close targets without touching the scope. This is the big dot version with tritium at both ends. Order it from our Lubbock, Texas gun shop for fast direct shipping, and browse more gun sights.