Barrett 82A1 .50 BMG 20″ Fluted Barrel 10-Rd

The Barrett 82A1 .50 BMG 20″ fluted barrel 10-rd is the gold standard for semi-automatic anti-materiel precision. Chambered in .50 BMG, this recoil-operated rifle delivers sub-MOA accuracy out to 1,800 meters with a chrome-lined, fluted barrel that sheds heat fast and extends barrel life. The 20-inch profile keeps the overall length manageable for transport while the 27 MOA elevation on the 23-inch M1913 rail gives you the vertical travel to reach extreme distances without shimming your optic.

Manufacturer	Barrett Firearms Manufacturing
Model	82A1
Material	Steel receiver, aluminum upper, polymer furniture
Compatibility	.50 BMG ammunition, M1913 optics, detachable 10-round magazines
Finish	Hardcoat anodized black
Weight	28.5 lbs (per manufacturer specs)
Condition	New

Key Features

• 20″ Fluted, Chrome-Lined Barrel — The fluting reduces weight and increases surface area for faster cooling during extended strings of fire, while the chrome lining resists corrosion and extends barrel life far beyond standard barrels. Why it matters: you shoot more rounds before the barrel walks, and the chrome lining means you can clean less often without accuracy loss.
• Recoil-Operated Semi-Automatic Action — The short-recoil system cycles reliably with full-power .50 BMG loads, bleeding off peak recoil impulse through the bolt and carrier assembly. Why it matters: follow-up shots stay on target faster than any bolt-action .50, giving you a tactical edge in multiple-target engagements.
• Extended M1913 Optics Rail (23″ with 27 MOA Elevation) — The monolithic rail provides a rock-solid mounting platform for any MIL-STD-1913 optic, with 27 MOA of built-in elevation so you can zero at 100 yards and dial out to 1,500+ meters without maxing out your turret. Why it matters: no need for aftermarket 20-MOA bases or shims—this rail is ready for extreme range right out of the case.
• Sorbothane Recoil Pad — The dual-layer Sorbothane pad absorbs up to 70% of the felt recoil energy, making the 82A1 shootable for extended sessions without shoulder fatigue. Why it matters: you can run a full 10-round magazine without flinching, maintaining consistent cheek weld and sight picture for every shot.
• Adjustable Bipod and Hard Carrying Case Included — The integrated bipod adjusts for height and cant, and the hard case protects the rifle during transport with cut foam for the rifle, one magazine, and accessories. Why it matters: you get a ready-to-deploy system out of the box—no extra bipod to buy, no case to hunt down.

Who It’s For

The Barrett 82A1 is built for long-range precision shooters who need to engage targets beyond 1,000 meters with surgical accuracy. It’s for military and law enforcement snipers who require a semi-auto .50 for anti-materiel and counter-sniper roles, and for civilian precision rifle enthusiasts who want the most proven .50 BMG platform on the market. If you’re shooting steel at 1,500 yards or need to disable vehicles and equipment, this rifle is the tool.

Pros & Cons

• Pros: Sub-MOA accuracy, semi-auto speed for follow-up shots, chrome-lined barrel for longevity, 27 MOA integrated rail, Sorbothane recoil management, included hard case.
• Cons: Weight at 28.5 lbs makes it less portable than lighter .50 platforms; the 20″ barrel reduces muzzle velocity by approx. 150 fps compared to the 29″ version, which can affect trajectory at extreme ranges beyond 1,800 meters.

Comparison

Feature	Barrett 82A1 .50 BMG 20″	Geissele Automatics Super Duty .308	Timney Triggers Competition AR-15
Caliber	.50 BMG	.308 Winchester	5.56 NATO / .223
Action	Recoil-operated semi-auto	Gas-operated semi-auto	N/A (trigger only)
Effective Range	1,800 m	800 m	N/A
Weight	28.5 lbs	7.4 lbs	N/A
Price	$9,606.67	$2,200	$275
Best For	Extreme long-range anti-materiel	Duty/competition .308	Trigger upgrade

FAQ

What is the barrel twist rate on the Barrett 82A1 .50 BMG 20″ fluted barrel?

The twist rate is 1:15″ per manufacturer specs. This is standard for .50 BMG barrels and stabilizes ball, match, and armor-piercing loads effectively.

Does the Barrett 82A1 come with a hard case?

Yes, the package includes a hard carrying case with cut foam for the rifle, one 10-round magazine, and accessories. The case is airline-checkable for transport.

Can I mount any scope on the Barrett 82A1?

Yes, the extended M1913 optics rail is 23″ long with 27 MOA of built-in elevation. It accepts any MIL-STD-1913 compatible scope mount or rings, giving you flexibility for night vision, thermal, or traditional day optics.

Is the Barrett 82A1 legal for civilian ownership?

Yes, the Barrett 82A1 is legal for civilian ownership in most states, subject to local and state laws. It is classified as a Title I firearm (rifle) under the National Firearms Act. Check your local regulations before purchase.

How does the 20″ barrel affect performance compared to the 29″ barrel?

The 20″ barrel reduces muzzle velocity by approximately 150 fps compared to the 29″ version, which slightly flattens the trajectory at extreme ranges beyond 1,800 meters. However, the shorter barrel improves portability and handling without sacrificing accuracy at typical engagement distances.

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Last updated: April 2026

According to NSSF data, the .50 BMG cartridge accounts for less than 0.5% of total ammunition sales, but the Barrett 82A1 holds over 80% of the semi-auto .50 BMG market share among precision shooters.

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