An M4A1 handguard that provides a base for the rail based attachment system. It provides 4 picatinny rails for mounting lights, lasers, bipods, grips, and optics.
M4 Handguard RIS is a Weapon Attachment in DayZ Standalone. It provides a dispersion reduction equal to that of the M4 Buttstock OE, but provides four picatinny rails for rail-based attachments. Currently the M4 Handguard RIS enables attaching Weapon Flashlights and ATLAS Bipods when equipped, and these attachments are not removed when the M4 Handguard RIS is removed. It can be painted black or green with Spraypaint.