THE M:4 IS A PATENT PENDING 1-PIECE MULTI-TOOL FOR THE M4 CARBINE DESIGNED AND MANUFACTURED BY MULTITASKER IN CONJUNCTICN WITH B5 SYSTEMS MAKERS OF THE SOPMOD AND SOPMOD-BRAVO BUTTSTOCKS. - THE M:4 IS PRECISION MACHINED FROM SOLID BARSTOCK USING WIRE-EDM/CNC 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 FUNCTICNS. - FEATURES: - DESIGNED FOR M4 CARBINE - NESTS INSIDE B5 SYSTEMS BUTTPAD - PRECISION CNC MACHINED FROM BAR STOCK FOR DURABILITY - 4 SPECIFIC FUNCTIONS - SLOTTED SCREWDRIVER - CASTLE NUT SPANNER - 1/2 HEX FOR SCOPE MOUNTS - BOLT OVERRIDE - 4 inches long .75 wide