The Browning BAR MK4 Hunter is a semi-automatic rifle chambered in .300 Win Mag with a 24-inch fluted barrel and a 3-round capacity. It has a black synthetic (composite) stock paired with a matte blued aluminum alloy receiver that is drilled and tapped. The barrel has a matte black finish. 
 

Key Specifications 

• Brand: Browning 
• Model: BAR MK4 Hunter 
• Caliber: .300 Win Mag 
• Action: Semi Auto 
• Barrel Length: 24 in 
• Capacity: 3+1 
• Color/Finish: Matte Blued / Black Synthetic 
   

Detailed Features 

• 24-inch fluted, matte black barrel 
• Black composite synthetic stock 
• Drilled and tapped aluminum alloy receiver 
• 3-round capacity 
• Gas-operated semi-automatic action

Owners of the BAR MK4 Hunter in .300 Win Mag typically pick the synthetic-stocked composite version for hunting in rough weather, and the matte blued finish holds up well in that context. The 24-inch fluted barrel draws appreciation for the added velocity it wrings from the .300 Win Mag cartridge without adding excessive weight.

The gas-operated action in .300 Win Mag gets consistent praise for reducing felt recoil compared to bolt rifles, which makes follow-up shots faster. Some owners find the 3-round capacity limiting depending on local hunting regulations, and note there is little aftermarket support for higher-capacity magazines.

Fit and finish on the synthetic-stocked BAR MK4 Hunter is generally considered functional rather than refined. The action is reliable but a handful of owners report the gas system requires break-in before cycling lighter .300 Win Mag loads consistently. Overall, it is regarded as a working hunting rifle rather than a collectors piece.