The Beretta A300 Ultima Patrol is a semi-automatic shotgun built for tactical and home defense applications, chambered in 12 GA with a 19.1" barrel and a black synthetic stock. 
 

Key Specifications: 

• Brand: Beretta 
• Model Name: A300 Ultima Patrol 
• Caliber: 12 GA 
• Chamber: 3" 
• Action: Semi-Auto 
• Capacity: 5+1 rounds 
• Barrel Length: 19.1" 
• Overall Length (OAL): 38" 
• Weight: 7.10 lbs 
• Sights: Ghost Ring 
• Stock Material: Synthetic (Fixed Stock) 
• Grip Type: Standard Polymer Grip 
• Finish Color: Black 
   

Detailed Features: 

The gas-operated action reduces felt recoil and lets you stay on target for faster follow-up shots. Ghost ring sights give you quick target acquisition at typical defensive distances without requiring an optic. The black synthetic stock handles rough use better than wood and doesn't need the same maintenance. 
 
The MobilChoke system lets you adapt the gun to different tasks -- tighter patterns for specific sporting uses, more open for home defense. The crossbolt safety is straightforward to operate under stress. At 38" overall with the 19.1" barrel, it's compact enough to handle in confined spaces while still holding 5+1 rounds.

Owners of the A300 Ultima Patrol generally rate it well for reliability and ergonomics. The gas-operated action is frequently cited as one of its strengths -- it cycles a wide range of loads without issues and the felt recoil is noticeably lighter than comparably sized pump guns.

The grip and controls get positive marks for being intuitive, which users appreciate whether they're running it at the range or considering it for home defense. Build quality is consistently called out as solid.

The main complaints are weight -- at 7.10 lbs it's heavier than some comparable models -- and price, which some feel is high relative to other tactical shotguns. A few users note that aftermarket parts specific to this model can be hard to find. New semi-auto shooters occasionally mention there's a learning curve coming from pump actions, though experienced users don't flag this as a problem.