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

Measurements
Length (capped): 149.6 mm/5.89”
Length (uncapped):  131.6 mm/5.18”
Length (posted): N/A
Diameter (section): 10.9—11.5 mm/0.43—0.45”
Diameter (barrel): 9.0—14.4mm/0.36—0.57”
Weight (all): 40.0 g
Weight (body): 21.5 g
Weight (cap): 18.5 g