The Ncstar MAR4S AR-15 M4 carbine quad rail system is light weight. This handguard quad rail for Ruger AR-556 and AR15, M4 Mil-Spec carbine platforms is easy to install on your Mil-spec AR-15 rifle. Fits AR-15 Carbin length rifles With 16" barrels. Quad rail Is machined from aircraft grade aluminum and has four picatinny rails. This Quad-Rail allow maximum heat dissipation and it has a Hard anodized finish for wear resistance and Limited lifetime warranty.
Specs
Fits Carbine Length AR-15 M16
Four Picatinny Rails Each With Slots.
Easy Installation with No Modification to the Barrel.
Perfect Fit with Barrel Nut and Round Front Handguard Cap
Length: 6.5" (6.7" O.A.L.)
Limited Lifetime Warranty.
Fits AR-15 M4 Carbine Rifle, S&W M&P 15, Bushmaster Xm15-e2s, Dpms AR 15 Carbines, Ruger AR556 and Mil-spec variants.
Designed to fit AR15/M4s with MIL-SPEC Barrel Nut, Delta Ring and front Handguard Cap. Note modification may be necessary on non standard Barrel Nut Delta Ring Handguard Cap rifles.