The Browning BAR MK4 Hunter .270 Win 22in Synthetic, 4rd is a gas-piston semi-auto built for serious field use. It pairs a fluted matte blued barrel with a lightweight alloy receiver and a shim-adjustable composite stock, giving you reliable cycling and solid ergonomics right out of the box. Whether you’re after whitetail or hogs, this autoloader handles fast follow-ups without beating you up.
| Manufacturer | Browning |
|---|---|
| Model | BAR MK4 Hunter |
| Material | Alloy receiver, composite stock with overmolded grip |
| Compatibility | .270 Winchester, 4-round detachable box magazine |
| Finish | Matte blued barrel, matte alloy receiver |
| Weight | 6 lb 12 oz (per manufacturer specs) |
| Condition | New |
Key Features
- Gas-Piston Operation – WHY IT MATTERS: Reduces recoil and keeps the action clean, so you stay on target for quick second shots without fighting the gun.
- Seven-Lug Rotating Bolt – WHY IT MATTERS: Locks up tight like a bolt-action, giving you the accuracy you need for ethical kills at hunting distances.
- Raised SoftFlex Cheekpad – WHY IT MATTERS: Provides a consistent cheek weld, even with optics mounted, and softens felt recoil against your face.
- Shim-Adjustable Stock – WHY IT MATTERS: Lets you dial in length of pull and comb height to fit your build, so the rifle points naturally every time.
- Fluted Matte Blued Barrel – WHY IT MATTERS: Reduces weight slightly and dissipates heat faster, keeping your shots consistent during a long day afield.
Who It’s For
This rifle is built for the hunter who wants the speed of a semi-auto without sacrificing the reliability of a traditional hunting gun. First-time buyers will appreciate the soft recoil and easy handling, while seasoned shooters will value the adjustable stock and proven gas system. If you hunt in thick cover or open fields and prefer fast follow-ups, this is your rig.
Pros & Cons
- Pro: Gas piston runs clean and cycles reliably with a wide range of .270 loads.
- Pro: Stock shim system lets you tailor fit without buying aftermarket parts.
- Pro: Lightweight alloy receiver keeps the overall weight under 7 pounds.
- Con: The 4-round magazine capacity is on the low side for some hunters who prefer 5+ rounds for peace of mind.
Comparison
| Feature | Browning BAR MK4 Hunter | Timney Triggers (aftermarket upgrade) | Geissele Automatics (AR-10 build) |
|---|---|---|---|
| Action Type | Gas-piston semi-auto | Trigger upgrade only | Direct-impingement semi-auto |
| Weight | 6 lb 12 oz | N/A (part) | ~8 lb (complete rifle) |
| Stock Adjustability | Shim system (LOP, comb) | N/A | Buffer tube, stock swaps |
| Best For | Hunting, fast follow-ups | Trigger tuning | Custom builds, target shooting |
FAQ
What is the barrel twist rate on the Browning BAR MK4 Hunter .270 Win 22in Synthetic, 4rd?
The factory twist rate is 1:10 inches, which stabilizes .270 bullets from 130 to 150 grains well for hunting.
Does this rifle come with scope rings or a rail?
No, the receiver is drilled and tapped for optics, but you’ll need to buy rings or a base separately. Many shooters use a one-piece base for simplicity.
Can I use the Browning BAR MK4 Hunter for hog hunting?
Absolutely. The .270 Win is a flat-shooting round, and the semi-auto action lets you put multiple rounds on moving hogs quickly. Just check your state’s magazine capacity laws.
Is the stock adjustable for left-handed shooters?
The shim system adjusts length of pull and comb height, but the stock itself is right-handed. Lefties may need an aftermarket stock or custom work.
What is the warranty on this rifle?
Browning backs it with a limited lifetime warranty for the original owner. Keep your receipt handy.
✅ Nationwide delivery (all 50 states) – ✅ Ships 1-2 business days – ✅ 30-day returns – ✅ Secure checkout
Check out more options in our Semi Auto Rifles or Hunting Rifles categories. For optics, see our Rifle Scopes.
Last updated: April 2026
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