This is a Rob Roberts Gun Works Ultima Combo built on the Beretta A300 platform, chambered in 20 Gauge with a 3-inch chamber and a 24-inch Steelium vent rib barrel finished in Optifade Cerakote camouflage. It is a semi-automatic turkey gun with 3+1 capacity, an adjustable comb drop, and a fiber optic front sight on a Picatinny rail for mounting an optic. The package includes a Raptor Turkey choke and a drilled and tapped receiver. 
 

Key Specifications 

• Brand: Rob Roberts Gun Works 
• Model: Beretta A300 Ultima Combo 
• Caliber: 20 Gauge 
• Action: Semi-Auto 
• Chamber: 3" 
• Capacity: 3+1 
• Barrel Length: 24" 
• Overall Length: 43.90" 
• Length of Pull: 14.25" 
• Finish: Optifade Cerakote 
   

Detailed Features 

• The Steelium vent rib barrel and receiver share an Optifade Cerakote finish built for turkey woods concealment. 
• A fiber optic front sight and Picatinny rail mount give a fast sight picture or room for a red dot. 
• The receiver is drilled and tapped, and the comb drop is adjustable to fit the shooter. 
• Ships with a Raptor Turkey choke matched to dense turkey patterns. 
• The trigger is a single select design and the gun is set up ambidextrous.

Owners running the Beretta A300 action generally describe it as a dependable platform, and the Rob Roberts Gun Works Ultima Combo carries that reputation into a dedicated turkey setup. People who have run this combo say the action cycles clean once broken in, though a few note any semi-auto shotgun needs a proper cleaning schedule to stay reliable in the field.

In the turkey woods, hunters like the Optifade Cerakote treatment for blending into cover, and the adjustable comb drop gets praised for letting different shooters get a consistent cheek weld with a red dot mounted on the Picatinny rail. The A300 platform is on the lighter side for a 20 Gauge, which owners appreciate on long spring sits and longer walks to a blind.

On value, buyers weigh the Ultima Combo against a stock A300 and generally feel the upgraded trigger, adjustable stock, and turkey choke justify stepping up from the base gun, even if it costs more than a plain factory setup. A recurring comment is that the fiber optic sight paired with the rail gives flexibility that a stock bead sight does not.