While optics have advanced tremendously over the past few decades, iron sights are still very much the same. To keep up with modern optics, Scalarworks created the PEAK iron sights. They’re designed to interface with modern carbines in a way that older fixed irons simply do not, in that the PEAK adjust in the same increments as most red dot optics (0.5 MOA/click). When acquiring zero with our Zero Target, all the adjustment data listed on the target applies to both your red dot optic and the PEAK iron sights.
Specifications:
*Fits MIL-STD-1913 Picatinny Rail
MATERIALS: 7075-T6 Aluminum + 4140H Steel
FINISHES: Type III Hard Anodizing + Flash Nitride®
CENTER HEIGHT OVER RAIL 1.42″ (36mm)
ADJUSTMENT: 0.5MOA/Click @ 15″ Sight Radius
Rear Sight ADJUSTMENT RANGE: 46MOA @ 15″ Sight Radius
Rear Sight FLIP APERTURES: Same-Plane 0.07″/0.20″ Diameter
Rear Sight WEIGHT: 1.44oz (40.7g)

We include an 8.5″ x 11″ rifle zero target with every iron sight. We recommend a 50/200 meter zero for most 5.56 rifles. (Click on the thumbnail for a printable version)
How to Zero in 2 Minutes – Video – T.REX ARMS