The SureFire M85 Picatinny rail forend replaces the original forend of M4 mid-length carbines with a triangular handguard cap (and similar firearms), allowing the user to mount a variety of accessories. CNC-machined from aerospace aluminum and given a Mil-Spec hard-anodized finish, these forends with integral MIL-STD-1913 specification rails are stronger and dissipate heat much better than the standard forends and provide rock-solid weapon fit and accessory mounting. The precision rails enable consistent "repeat zero" of any accurately dimensioned devices attached to them, such as SureFire WeaponLights.
Width 1.67 inches
Length 8.59 inches