To keep a few tools with a rifle, America Grip uses a portion of the Picatinny rail as a convenient place to carry a basic driver handle and bits. The Tool Grip includes four 2" hex bit tools (P1 Philips, P2 Philips, Flat Head, #1 Robertson) that nest within two, U.S.-made ABS plastic grip panels. The handle is formed by snapping the two panels together, and the combined weight is 1.2 ozs. Price: $15. Contact: America Grip; (512) 968-3235; americagrip.com.