Nerf Mk-11.1: Durendal Alternate Handle

An arguably improved version of the Mk-11 Durendal's handle, which in itself is a 3D-printed variant of Captain-Slug's Durendal.

Replaces the D-Grip components.

Mk-11 guide + filelist here: http://nerfhaven.com/forums/topic/27889-mk-11-durendal/