Maxim Mark I .303 heavy machine-gun, made by Vickers Sons & Maxim at Enfield. This model was used during the South African War (1899 - 1902) and during World War I. The New Zealand Army purchased four of these guns in 1901 but by 1916 they were obsolete as a front line gun.
[raw, uncleaned 3d scan data from a Artec EVA scanner]
Auckland Museum ID: W1496
Source record on Auckland Museum website.