S7 Tool Steel Internal Receiver Cam Rail for FNH(tm) SCAR(tm) 17S, CypherX

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Internal receiver cam rail for the Scar(tm) 17s and CypherX receivers. New.

  • Replaces FN(tm) part F182120010
  • Machined from S7 Tool Steel for a lifetime of reliability
  • Slick black oxide finish
  • Has the same weight-reducing features machined in as the original factory rails