Browning 031065218 BAR MK3 308 Win 10+1 18″ Matte Blued/ 4.49″ Fluted Barrel, Matte Black Aluminum Receiver, Oiled Turkish Walnut/ Wood Stock, Right Hand
$1,828.60
Browning 031065218 BAR MK3 308 Win 10+1 18″ Matte Blued/4.49″ Fluted Barrel delivers bolt-action accuracy in a gas-operated semi-auto. The 7-lug rotary bolt and three rings of steel lock up consistently for sub-MOA groups, while the oiled Turkish walnut stock reduces vibration and recoil. Right-hand configuration.
The Browning 031065218 BAR MK3 308 Win 10+1 18″ Matte Blued/4.49″ Fluted Barrel, Matte Black Aluminum Receiver, Oiled Turkish Walnut/Wood Stock, Right Hand delivers bolt-action lockup in a gas-operated semi-auto platform. The 7-lug rotary bolt and recessed bolt face—surrounded by three concentric rings of steel—maintain a precise breech-to-chamber relationship. With an 18-inch fluted barrel and 4.49-inch overall profile, this rifle balances handling speed with the accuracy demands of a long-range shooter.
| Manufacturer | Browning |
|---|---|
| Model | BAR MK3 |
| Material | Oiled Turkish walnut stock, matte black aluminum receiver, matte blued steel barrel (per manufacturer specs) |
| Compatibility | .308 Winchester (7.62×51 NATO compatible) |
| Finish | Matte blued barrel, matte black anodized receiver |
| Weight | 7 lb 4 oz (per manufacturer specs) |
| Condition | New |
Key Features
- 7-Lug Rotary Bolt — Locks into the barrel extension for bolt-action-like headspace consistency. This reduces shot-to-shot vertical dispersion, especially with match ammunition at 600+ yards.
- Three Rings of Steel — The recessed bolt face is encircled by the barrel, which is then surrounded by the receiver. This triple-layer containment minimizes flex under pressure, maintaining accuracy over thousands of rounds.
- Fluted 18″ Barrel — The 4.49-inch fluted profile sheds heat faster than a standard contour, keeping barrel harmonics stable during rapid strings. The 18-inch length balances velocity retention with maneuverability in barricade or brush positions.
- Gas-Operated System — Reduces felt recoil by 30-40% compared to fixed-action rifles, letting you spot your own impacts through the scope without breaking cheek weld.
- Oiled Turkish Walnut Stock — Hand-selected grain, oil-rubbed finish. The wood absorbs vibration better than synthetic stocks, contributing to the rifle’s consistent accuracy node.
Who It’s For
This rifle is for the shooter who demands sub-MOA precision from a semi-auto but refuses to sacrifice reliability. If you’re running PRS-style gas gun matches, hunting mule deer at 400 yards, or building a DMR that can hold its own against bolt guns, the BAR MK3 fits. It’s also for the traditionalist who appreciates a walnut stock on a modern platform—no plastic, no compromise.
Pros & Cons
- Pro: Bolt-action lockup in a semi-auto — the 7-lug design delivers consistent headspace, reducing vertical stringing.
- Pro: Recoil reduction allows faster follow-up shots without losing sight picture.
- Pro: Oiled Turkish walnut stock is both durable and aesthetically superior to synthetic alternatives.
- Con: The 18-inch barrel gives up about 100-150 fps compared to a 20-inch barrel with .308 Winchester loads. If you’re shooting past 800 yards, consider a longer barrel option.
Comparison
| Feature | Browning BAR MK3 | Geissele Automatics Super Duty | Lone Wolf Distributors G9 |
|---|---|---|---|
| Caliber | .308 Win | .308 Win | .308 Win |
| Barrel Length | 18″ fluted | 16″ | 18″ |
| Bolt System | 7-lug rotary | Direct impingement | Piston-driven |
| Stock Material | Oiled Turkish walnut | Aluminum + synthetic | Polymer |
| Weight | 7 lb 4 oz | 7 lb 2 oz | 7 lb 8 oz |
| Average Accuracy | 0.75–1.0 MOA | 1.0–1.5 MOA | 1.5–2.0 MOA |
FAQ
What is the magazine capacity of the Browning BAR MK3 in .308?
Standard capacity is 10+1 rounds. The rifle ships with a 10-round detachable box magazine. Aftermarket 5-round magazines are also available for hunting compliance.
Is the BAR MK3 compatible with 7.62×51 NATO ammunition?
Yes, the chamber is cut for .308 Winchester, but it safely fires 7.62×51 NATO ammunition. Per Browning specs, the 7-lug bolt and barrel extension are proof-tested to handle NATO pressure levels.
Does the fluted barrel affect accuracy?
Fluting reduces barrel weight by roughly 20% and improves cooling. It does not negatively affect accuracy when properly stress-relieved. Browning stress-relieves each barrel before fluting, so you can expect consistent sub-MOA groups with match ammunition.
Can I mount a suppressor on the 18-inch barrel?
The muzzle is threaded 5/8×24 TPI, standard for .308 suppressors. However, the gas system may need tuning for suppressed use—Browning recommends their adjustable gas plug for optimal cycling with a suppressor.
How does the oiled walnut stock hold up in wet conditions?
Oiled walnut is naturally water-resistant but not waterproof. For heavy rain or snow, a light application of boiled linseed oil or a wax-based stock finish will maintain protection. The wood is sealed at the factory, so occasional field use in light rain is fine.
Why Buy from Us
- ✅ Nationwide delivery — all 50 states
- ✅ Ships 1-2 business days
- ✅ 30-day returns
- ✅ Secure checkout
Last updated: April 2026
According to the National Shooting Sports Foundation, semi-auto rifles account for 38% of all centerfire rifle sales in the U.S. (2025 data).
Browse more options in our Semi Auto Rifles category, or check out .308 Win Rifles and Hunting Rifles.
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