B5 Systems & MultiTasker M4 Multi Tool and Field Wrench for B5 Stocks

The M4 is a 1-piece multi-tool for the M4 carbine designed to stowed inside the butt plate of stocks from B5 Systems

The M4 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 functions.

4 Mission critical functions:

• 1/4″ Flathead screwdriver
• Dual lug castle nut spanner wrench
• 1/2″ Hex wrench for many common scope mounts
• Bolt-override malfunction clearance tool