Barrett M107A1 20183 | .50 BMG | 20″ Fluted Barrel

The Barrett M107A1 (model 20183) is a purpose-built semi-automatic .50 BMG rifle designed for extreme-distance marksmanship and range training. It pairs a 20-inch fluted barrel with a Picatinny rail receiver and an M-LOK handguard to allow modern optic and accessory setups. A quick-detach adjustable bipod and modular rear hand grip add support and stability for extended shooting sessions. For optics under $1,000 that suit this platform, a Primary Arms SLx 4-14×44 FFP provides useful magnification, rugged construction, and first focal plane holdovers appropriate for long-range work.

Product Specifications

• The manufacturer is Barrett Firearms and the model is M107A1 (20183).
• The rifle is chambered in .50 BMG.
• The action is Semi-Auto.
• The capacity is 10 + 1.
• The barrel is described as Fluted.
• The barrel length is 20 inches.
• The overall length is 48 inches.
• The weight is 27.40 lbs.
• The finish style is Blued/Black.
• The stock finish group is Black.
• The muzzle device is a Muzzle Brake.
• The rifle features a Picatinny rail receiver and an M-LOK handguard.
• The forend includes a QD adjustable bipod and a modular rear hand grip accepting a monopod.
• The rate of twist is 1:15″.
• The UPC is 810021512662.

The M107A1 balances robust long-range capability with modular mounting options to support optics and accessories needed for precision work. Its 20-inch fluted barrel and stabilizing features make it well suited to extreme-distance marksmanship and deliberate range training where support and repeatable ergonomics matter. If long-range precision and a durable, serviceable platform are priorities, this configuration delivers a practical foundation for building a capable system.

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