B5 Systems M4 Multi-Tasker Tool Black. Easily accessible without tools simply by pressing the release tabs on the buttpad (sold separately). Dot coded to indicate functions. The M:4 is a patent pending 1-piece multi-tool for the M4 carbine designed and manufactured by MultiTaskerin conjunction with B5 Systems. Specifications for B5 Systems M4 Multi-Tasker Tool: Manufacturer: B5 Systems Color: Black Fabric/Material: Solid Bar Stock Steel Tools: slotted screwdriver castle nut spanner 1/2? hex for scope mounts and bolt override Precision machined from barstock Nests inside the b5 systems buttpad Package Contents: B5 Systems M4 Multi-Tasker Tool B5 Systems MTR-1395: M4 Multi-Tasker Tool Black