Grand quasirhombic prismatotesseract

The grand quasirhombic prismatotesseract, or gaqript, is a nonconvex uniform polychoron that consists of 8 great rhombihexahedra and 24 octagrammic prisms. Two great rhombihexahedra and four octagrammic prisms join at each vertex.

It can be constructed as a blend of three octagrammic duoprisms. In the process half the octagrammic prisms blend into great rhombihexahedra.

Vertex coordinates
The vertices are the same as those of the regiment colonel, the sphenoverted tesseractitesseractihexadecachoron.