Pattern: 1878 Pistol Revolver BL Tranter Interchangeable Mk I, Introduced in to NZ Service: 1880, 

Maker: William Tranter, Birmingham.

Calibre: .450 CF, Bore: 5 groove RH twist 1:22 in, Barrel length: 6.0 in.

OA Length: 11.5 in. Type of Action: Double Action, six shot Weight: 2 lb 7 oz.

Sights: foresight blade & groove in top strap.

The revolver has a rear loading gate and a spring loaded eject.