One of the best things about the previously reviewed Multitasker TUBE is its ability to use standard 1/4″ screw driver bits. This lets the user easily tailor the TUBE to their specific rifle. However, most 1/4″ bits are very short which makes reaching inside the grip to reach the grip screw tricky. There are extended bits available but they can be difficult to find for anything but Phillips or flat head fasteners. This obviously won’t work for grips that use hex fasteners.
The alternative to the extended bits is an extension. An extension will allow you to take advantage of the near endless array of short 1/4″ bits. These extensions are available in several different lengths but a 3″ extension should be sufficient for reaching the grip screw. I purchased the extension from a local hardware store for less than $2 and it tucks away easily in the Multitasker TUBE Expansion Pack carrying case.
I can’t take credit for this idea. I originally saw Ryo mention the extensions in his excellent review of the TUBE on AR15.com.