The Mossberg 510 Mini Super Bantam is a 20-gauge pump-action shotgun built specifically for youth and smaller-framed shooters. At 5 lbs and 34.75 inches overall, it's one of the lighter options in its class. 
 

Key Specifications 

• SKU: 1794000638 
• UPC: 015813504850 
• Brand: Mossberg 
• Model Name: 510 Mini Super Bantam 
• Gauge: 20 GA 
• Chamber: 3" 
• Action Type: Pump Action 
• Capacity: 3+1 (4 rounds total) 
• Barrel Length: 18.5" 
• Overall Length: 34.75" 
• Weight: 5 lbs. 
• Sights: Dual Bead 
• Stock Material/Finish: Synthetic (Black) w/ Spacer 
   

Features 

 
Length of pull adjusts between 10.5" and 11.5" using the included spacer system, so the stock can grow with the shooter over multiple seasons. A recoil pad and sling swivel studs come standard - useful for carrying in the field and for cushioning the already mild 20-gauge recoil. The top-mounted safety is ambidextrous and easy to reach whether you shoot right or left-handed. The pump action is simple to operate and easy to understand for new shooters. 
 

Usage 

 
The 510 is at home on youth hunting trips where a long day in the field calls for a light gun, and it works well on clay target courses for developing basic shotgun technique. The 18.5-inch barrel and compact overall length make it maneuverable in brush. While designed as a youth model, adults looking for a very compact pump gun have used it in home defense roles.

The Mossberg 510 Mini Bantam Youth 20GA Pump Shotgun gets consistently good reviews as a starter shotgun for young hunters and new shooters.

The light weight is the most frequently praised feature - at 5 lbs, it won't fatigue a smaller shooter over a full day in the field. Parents appreciate how manageable it is for kids who are still building strength and technique. The adjustable stock is mentioned often as a practical long-term feature, since it extends the useful life of the gun as the shooter grows.

The pump action earns praise for simplicity and reliability. For a new shooter, understanding exactly what the gun is doing at each step builds confidence, and the 510's action is easy to follow.

Adults occasionally note that the compact dimensions make it uncomfortable for them to shoot - which is expected for a youth-specific design. Some owners add aftermarket recoil pads or modifications for enhanced comfort, though most youth shooters find the standard configuration adequate for 20-gauge loads.