Built on a Mauser Model 98 pattern action. The barrel is fitted with a beaded blade front and five leaf, one standing four folding, rear sight marked from 100 to 500 yards with platinum inlaid centerlines. The top of the barrel is marked "WESTLEY RICHARDS & CO. LONDON" ahead of the rear sight and a triangle on top of the chamber. The top of the receiver ring is stippled with the serial number above "WESTLEY RICHARDS/.425 MAGNUM/EXPRESS" on the left side. The action is fitted with a bent down bolt handle with hard rubber knob. Mounted in a straight grain multipoint checkered walnut pistol grip stock with horn forend tip and grip cap, assembly number marked behind the grip cap, shadowline cheekpiece, silver initial escutcheon, and orange recoil pad.