Armalite AR-50A1 .50 BMG Single-Shot Bolt-Action Rifle, 30 in Heavy Barrel, 15-MOA Rail, Black
The Armalite AR-50A1 is a purpose-built .50 BMG single-shot precision rifle featuring a 30-inch, free-floated heavy barrel and a robust steel receiver bedded in an aluminum chassis. This example stands out with its long MIL-STD-1913 Picatinny top rail with a 15-MOA incline, a large multi-baffle muzzle brake, and fully adjustable chassis ergonomics designed for stability and control.
Condition
Overall Condition: Very good condition, showing only light, superficial signs of prior handling or use.
Bore Condition: Excellent - Clean, mirror finish, no signs of wear.
Bore Rifling: Excellent Rifling - Sharp lands and grooves.
Specific Condition Notes: There are minimal markings from previous handling and use. The bore is bright and clean.
What’s Included
- Heavy-duty adjustable bipod (installed on fore-end)
The AR-50A1 uses a single-shot, bolt-action design chambered in .50 BMG. It employs a 30-inch chrome-moly steel barrel with a free-floated, heavy-profile straight taper and a 1:15 RH twist. A large multi-baffle muzzle brake is fitted to manage recoil and muzzle movement.
The octagonal 4340 steel receiver is manganese-phosphated and bedded into a V-channel aluminum chassis. The chassis is black hard-anodized and pairs with an extruded aluminum fore-end that features exterior flutes and an underside mounting rail/slots. Overall length is 58.5 inches with a factory weight of 37.1 pounds.
A long MIL-STD-1913 Picatinny top rail with a 15-MOA incline is installed. The rifle includes a two-position safety and a rubber finger-grooved pistol grip for secure handling. The length of pull measures 15.0 inches.
The stock system is designed for precision shooting, with an adjustable buttpad, adjustable cheekpiece, and an integrated rear monopod for fine elevation control. Country of origin is the USA, and the rifle is finished in black to match the chassis.



