The Mossberg 500 All Purpose Field is a pump-action shotgun in 20 GA. It holds 5+1 rounds, has a 26-inch barrel, and an overall length of 45.25 inches. Weight is 7 lbs. Chamber is 3 inches. Sights are dual bead. Stock is black synthetic with a top tang safety. 
 

Key Specifications 

• Model Name: 500 All Purpose Field 
• Brand: Mossberg 
• Gauge: 20 GA 
• Action: Pump Action 
• Capacity: 5+1 rounds 
• Barrel Length: 26 inches 
• Overall Length: 45.25 inches 
• Weight: 7 lbs 
• Chamber Size: 3 inches 
• Sights: Dual Bead 
   

Features 

 
The 500 is a workhorse pump with decades of field use behind it. The top tang safety is fast to reach without shifting grip. At 7 lbs in 20 gauge it's a touch heavier than some aluminum-receiver competitors, but the weight settles recoil well. The 26-inch barrel balances maneuverability and accuracy for upland game and clay sports. Black synthetic stock shrugs off weather and rough handling. The Mossberg 500 platform has a wide accessory ecosystem -- barrels, stocks, and forends are easy to find.

The 500 in 20 gauge has a strong following. Owners consistently note the gun's durability and reliability under hard use. Cycling is described as smooth and maintenance is straightforward. The 20-gauge chambering keeps recoil mild, which makes the gun approachable for newer shooters while still performing for experienced hands.

Common criticisms are minor: some buyers wish the stock had more adjustment options, and a few find the gun heavier than other 20-gauge pumps they've handled. Customization is a highlight -- the broad accessory selection lets owners tailor the 500 to specific uses. Overall the platform holds a solid reputation across hunting, sport shooting, and general-purpose roles.