This pen was kindly lent to me by 4M – thank you!

Measurements
Length (capped): 142.7 mm/5.62″
Length (uncapped): 129.6 mm/5.10″
Length (posted): 163.0 mm/6.41”
Diameter (section): 9.9 – 11.1 mm/0.39″ – 0.44″
Diameter (barrel): 10.2 – 13.3 mm/0.40″ – 0.52″
Weight (all): 28 g
Weight (cap): 10 g
Weight (body): 18 g