This highly accurate competition rear sight is capable of fine adjustments that will remain where you set them thanks to the new Stay Straight dual detent mechanism. The flip-up peep aperture is machined to allow the installation of different micro-apertures (4 available). The standard, included aperture is .040".
Elevation and windage in either 1/2 or 1/4 minute of angle clicks (note description)
Long distance aperture has been machined to allow screw-in installation of any one of four different interchangeable micro-apertures
Comes with 0.040" aperture as standard
Drop in installation replaces A2 rear sight
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