Versatile Quad Rail for M4/AR

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Product Overview

The VFR Versatile Quad-Rail System for M4 allows wide versatility and modification options for optimal compatibility with individual operational needs. 


  • Four 1913 MIL-SPEC picatinny rails for versatile mounting options
  • Side and under rail can be removed or repositioned on any of 7 positions
  • Precision machined from 6061 T6 Billet aluminum for maximum durability
  • Rugged construction will not bend or deform under any condition
  • Field tested under extreme conditions for maximum performance
  • Rail system firmly locks to the barrel nut and over the M4 upper rail
  • Maintaining free floating barrel for optimal ballistics and accuracy
  • Quick and easy installation, no Gunsmith required
  • Slim profile for better grip and firearm handling


  • Carbine Length M16 models and variants with an upper picatinny rail
  • Also available in the C version for models with a carry handle