The Rock Island Armory SemiAuto Field is a 12-gauge gas-operated semi-automatic shotgun with a 26-inch barrel and a black synthetic stock. At 8.82 lbs it runs in the heavier end of the field shotgun category, but it ships with three chokes and a crossbolt safety that new shooters adapt to quickly. 
 

Key Specifications 

• Brand: ARMSCOR 
• Model Name: SemiAuto Field 
• Caliber/Gauge: 12 GA 
• Action Type: Semi-Auto 
• Chamber Length: 3" 
• Barrel Length: 26" 
• Overall Length: 48.82" 
• Weight: 8.82 lbs 
• Capacity: 5+1 rounds (including chamber) 
• Sights Type: Bead Front 
• Stock Type: Fixed with Rubber Cheek Piece (Synthetic) 
• Grip Style: Standard 
• Trigger Type: Standard 
• Safety Mechanism: Crossbolt Safety 
• Finish Color/Type: Black 
   

Detailed Features 

The semi-automatic action cycles follow-up shots without any manual intervention between shots. Three interchangeable chokes (IC, M, F) cover most hunting and range scenarios. The synthetic stock with rubber cheek piece holds up to weather and hard use without the maintenance a wood stock requires. Crossbolt safety placement is conventional and easy to reach. 
 

Usage 

This gun is most commonly used for bird hunting and range work. The 26-inch barrel and 3-inch chamber handle standard field loads through heavier hunting rounds. Five-plus-one capacity is adequate for most hunting situations. The price point positions it as an entry to mid-level option in the semi-auto market.

The RIA SemiAuto Field's main selling point in user discussions is its price relative to what you get. Owners consistently point to the value -- a functional, gas-operated semi-auto at an accessible entry price.

The semi-auto action earns generally positive marks for smooth cycling under typical conditions. Most owners run it without cycling issues on standard shells.

On the critical side, the 8.82 lb weight comes up regularly as a drawback for hunters who carry their gun for long periods. Some owners have reported cycling issues with certain low-brass or budget ammunition, which is a known behavior for gas guns that aren't broken in or tuned for light loads. A few users also note the stock fit and ergonomics as average rather than dialed-in, suggesting aftermarket stocks can improve the experience.