Unfullered blade 540 mm long; MRD 23.0 mm; heavily squared pommel

Albert N. Hardin, The American Bayonet 1776/1964

This a distinct style in that the blade has no fuller. This variation has a blade 21.25 inch (540 mm) long, .96875 inch (24.6 mm) wide and .3125 inch (7.9 mm) thick. 

The cast-brass hilt is slightly longer, more bulky and less gracefully in guard design and is more heavily squared at the pommel although it is of the same design  of those already described.  The hilt is 4.875 inches (124 mm) long.  It terminates in the unique flat bird's-head pommel which is associated to BG&M bayonets.  The upper guard flares out rather boldly to enclose the .906 inch  (23.0 mm) diameter bore.  Its external surface is oval and it terminates in a forward-pinched cockscomb finial.  The grip is circular in cross-section and is covered with concentric finger-ridges.  The pommel is flat on both sides and along the top.  The short stud spring is set vertically into the obverse flat.  The spring is attached by a screw at its lower end.  A short .375 inch stud groove is milled into the upper flat.  The only marking on these arms is a serial number of one or two digits, found on the lower guard flat or just forward of the stud groove.  The lock-to-muzzle distance is 4.34375 inches (110 mm).  

The bayonet is brightly finished.