Steyr HS .50 / HS .460
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The Steyr HS .50 and the Steyr HS .460 are single-shot anti-materiel rifles manufactured by Steyr Mannlicher and chambered in .50 BMG and .460 Steyr, respectively. Wikipedia
Action: Bolt action
Caliber: .50 BMG
Cartridge: .50 BMG.460 Steyr
Effective firing range: 1500–2500 m
Feed system: Single shot (HS.50, HS.460); 5 round detachable box magazine (HS.50 M1)
Length: 1,370 mm (54 inches)
Manufacturer: Steyr Mannlicher