The Mossberg SA-20 All-Purpose Field is a 20-gauge semi-automatic shotgun designed for hunting and general field use. MPN 75772. It weighs 5.75 lbs and measures 44.5 inches overall with a 26-inch barrel, which keeps it easy to carry all day without much fatigue. The fixed black synthetic stock holds up in rough conditions, and bead sights give intuitive point-and-shoot aiming. 
 

Key Specifications 

• Brand: Mossberg 
• Model Name: SA-20 All-Purpose Field 
• MPN: 75772 
• Caliber/Gauge: 20 GA 
• Chamber: 3" 
• Action Type: Semi-Auto 
• Capacity: 5 rounds (4+1) 
• Barrel Length: 26 inches 
• Overall Length: 44.5 inches 
• Weight: 5.75 lbs 
• Sights: Bead 
• Stock Type: Fixed Synthetic 
• Finish Color: Black 
   

Detailed Features 

The SA-20 runs a semi-auto action that lets you get follow-up shots on target quickly without working a pump. The 26-inch barrel provides good balance and keeps recoil manageable for shooters who are sensitive to hard-kicking loads. Standard bead sights work well for wing shooting and other moving-target applications where a quick, natural mount matters more than precision adjustments. The 3-inch chamber handles a full range of field loads, and the 4+1 capacity means fewer reloading stops in the field.

Most SA-20 owners are satisfied with what the gun delivers at its price point. The light 5.75-lb weight and manageable 20-gauge recoil make it a natural recommendation for newer shooters or anyone who wants to carry all day without strain. The semi-auto action is generally reliable, and the build quality is viewed as solid despite the lightweight construction.

The recurring criticisms involve cycling lighter loads. A handful of owners note occasional failures to cycle with very light target ammunition, suggesting the gun prefers standard field loads. Some reviews mention the stock fits taller shooters a bit short, and a few buyers would like more finish customization options. Maintenance is straightforward, but owners note it should be kept clean for reliable operation.