Description
Manufactured from a special high temperature resistant polymer. M4S1 fits AR carbine handguard with interlocking top and bottom handguard sections. It Includes a bottom rail that can be mounted to the existing sling swivel mount for additional rigidity.
The M4S1 also works with standard direct gas operating systems which includes two interchangeable lower rails of 4″ & 1.75″ lengths this allows the operator to quickly change rails based on mission needs.
