The M4 is a patent pending 1piece multitool for the M4 carbine designed and manufactured by MultiTasker in conjunction with B5 Systems makers of the SOPMOD and SOPMODBravo buttstocks. The M4 is precision machined from solid barstock using wireEDMCNC and fits discreetly with no visible footprint inside a specially inletted buttpad made by B5. Easily accessible without tools simply by pressing the release tabs on the buttpad. Dot coded to indicate functions.