The highest damage and wear portion of irons tend to be the upper area of either side of the base. I primarily only use Magpul steel irons or KAC's micros, which tend to hold up very well and maintain a low profile, low 'snag' design.
The ultra-low profile folding irons are a particular advantage when running a rifle mounted RMR as the dedicated optic, on an ultra low base. Some of these irons will fold below the level of the RMR's lens, and while upright will stand tall enough to function above the RMR's guard.
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