HRF Concepts RCM - MCX surefire DIOPTER ADJUSTMENT: -6 TO +2

DIOPTER ADJUSTMENT: -6 TO +2

O-ring for keeping debris out

This arm is NOT COMPATIBLE with bayonet-style night vision helmet mounts

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The EXPS3 offers true two eyes open shooting for fast target acquisition

HRF Concepts RCM - MCX surefire DIOPTER ADJUSTMENT: -6 TO +2RCM for MCX The MCX RCM (Rifle Combat Magwell) features a 250% larger funnel surface allowing for consistent and fast reloads under any condition. Compatible with all major magazines (including M3 PMAGs) on the market as well as higher capacity options like the Magpul D60 or Surefire MAG5 60. The MCX RCM fits onto all SIG MCX, Virtus, Rattler and SPEAR LT receivers. FDE and ODG colors coated using DuraCoat. The MCX RCM works great for unconventional