The Mossberg 500 Combo Field/Deer is a 20-gauge pump-action shotgun with a 26-inch barrel, hardwood stock, and blued finish. Capacity is 5+1. The combo includes both a vent rib field barrel and a rifled deer barrel, which accounts for the two overall length figures (45.5 inches rifled, 43.5 inches vent rib). 
 

Key Specifications 

• UPC: 015813542821 
• Gauge: 20 GA 
• Action: Pump Action 
• Capacity: 5+1 Rounds 
• Barrel Length: 26 inches 
• Chamber Size: 3 inches 
• Overall Length: 45.5 inches (Rifled) / 43.5 inches (Vent Rib) 
• Weight: 7 lbs 
   

Detailed Features 

The pump action cycles reliably and allows fast follow-up shots. The Accu-set choke system lets the shooter swap choke tubes for different load types and hunting scenarios. Dual bead sights are adjustable. The hardwood stock gives the gun a traditional appearance, and the blued finish is standard for the platform. 
 
The combo format is practical: the vent rib barrel covers upland birds and small game, while the rifled deer barrel handles slug loads at closer ranges. Top-tang safety is accessible for both right- and left-handed shooters. 
 

Target Audience: 

Hunters who want a single shotgun that covers both bird and deer seasons. The 20-gauge caliber and 7-lb weight are accessible to a range of shooter sizes, including those who find 12-gauge heavy or hard to handle. 
 

Usage Scenarios: 

• Hunting: the two-barrel combo covers upland birds with the vent rib and deer with the rifled slug barrel. 
• Sport shooting: vent rib barrel works for trap or skeet. 
• Home defense: 5+1 capacity and reliable pump action are adequate for defensive use.

The Mossberg 500 Field/Deer in 20-gauge consistently draws positive feedback for its versatility and the practical value of the combo format.

The pump action is described as reliable across a range of load types, and the gun's handling gets good marks for a 7-lb shotgun. The blued/wood aesthetic appeals to shooters who prefer traditional styling. The two-barrel combo is the most common topic. Owners value having both field and deer options from a single purchase.

The most frequent criticism is the 20-gauge caliber's limitations on larger game at longer ranges compared to 12-gauge, which some buyers note after purchase. This is a cartridge trade-off rather than a gun deficiency. Overall sentiment is positive, with buyers recommending it for hunters who need flexibility across different seasons.