The Steyr Arms HS50 M1 Mountain is a bolt-action rifle chambered in .50 BMG with a 24-inch free-floating cold hammer-forged barrel, optic-ready steel receiver, and fixed stock with adjustable cheekpiece. 
 

Key Specifications 

• Model: HS 50 M1 Mountain 
• Manufacturer: Steyr Arms 
• Type: Bolt Action Rifle 
• Caliber: .50 BMG 
• Barrel Length: 24 inches 
• Capacity: 4+1 rounds (detachable box magazine) 
• Weight: 28.70 lbs 
• Overall Length (OAL): 48 inches 
• Finish Color: Black (Blued/Black) 
• Receiver Material: Steel 
• Stock Description: Fixed with Adjustable Cheekpiece 
• Safety Mechanism: Two-position safety 
• Sights: Optic Ready (no iron sights) 
   

Features 

 
The free-floating cold hammer-forged barrel eliminates contact between barrel and stock, which removes one variable from shot-to-shot consistency. The 1:15" twist rate is optimized for .50 BMG bullet weights. The two-stage trigger has a defined first stage and a clean break, which matters for precision shooting at the distances this rifle is intended for. The adjustable cheekpiece on the fixed stock lets you set proper eye alignment behind an optic without a separate riser. Steel receiver handles the .50 BMG's operating pressures reliably. At 28.70 lbs. this is a heavy rifle by any measure; that weight also helps absorb substantial recoil from the .50 BMG cartridge. 
 

Usage 

 
The HS50 M1 is purpose-built for long-range target shooting and competition. The .50 BMG cartridge is effective at extreme ranges and retains significant energy, but the associated weight, cost, and logistical requirements mean this rifle is for dedicated long-range shooters.

The HS50 M1 Mountain's owner discussions center on accuracy and recoil management, the two things that matter most at .50 BMG distances and energies.

Accuracy gets strong marks. Owners shooting at long ranges report consistent performance, and credit the cold hammer-forged barrel and quality trigger. The muzzle brake is a genuine point of praise: it makes the rifle significantly more comfortable to shoot than unbraked .50 BMG alternatives, which is the difference between a range session and an ordeal. The ergonomic design and adjustable cheekpiece also receive positive feedback for comfort over extended shooting.

The criticisms are predictable for a rifle of this class. Weight is the most common. 28.70 lbs. is substantial, and portability is limited. The price reflects the quality and caliber, but .50 BMG starts at a price point that prompts buyers to think carefully before committing. Ammunition cost and availability also come up regularly in discussions. These aren't surprises to serious .50 BMG shooters but are worth noting for buyers new to the caliber.