The TriStar Viper G2 is a gas-operated semi-automatic shotgun in 20 gauge. This Mossy Oak Bottomlands version has a 24-inch chrome-lined barrel and ships with three Mobilchoke choke tubes. 
 

Key Specifications 

• Model: Viper G2 
• Gauge: 20 GA 
• Action: Semi-Automatic 
• Barrel Length: 24 inches 
• Capacity: 5+1 
• Weight: 6.3 lbs 
• Chamber Length: 3 inches 
• Finish: Mossy Oak Bottomlands Camouflage 
   

Detailed Features 

 
The chrome-lined barrel holds up to repeated cleaning and resists corrosion. The Mobilchoke system uses standard thread-in chokes; three come included (Improved Cylinder, Modified, Full), which covers the common use cases without additional purchases. A fiber optic front bead gives a clear sight picture in variable light. 
 
At 6.3 lbs, the Viper G2 is easy to carry in the field for extended periods. The 20-gauge chambering generates noticeably less felt recoil than a 12-gauge, which makes it practical for younger shooters and anyone who finds 12-gauge fatigue a factor during long sessions. 
 

Usage 

 
The Viper G2 is a hunting and sport shooting shotgun. The 24-inch barrel and camo finish suit upland and waterfowl hunting. The semi-auto action cycles quickly for follow-up shots in field conditions. Like most gas-operated semi-autos, it may need a break-in period and performs more consistently with standard or higher-velocity loads than with light target loads.

The TriStar Viper G2 in Mossy Oak Bottomlands draws favorable feedback overall, with the 20-gauge chambering and weight being consistent selling points.

The lightweight build at 6.3 lbs is frequently mentioned. Hunters who carry it through the field for a full day notice the difference versus heavier 12-gauge alternatives. The camo pattern gets good marks for aesthetics and functionality in hunting scenarios.

The semi-auto action is praised for smooth cycling once the gun is broken in. Most owners work through an initial period of occasional failures to feed or extract in the first few boxes of shells, after which the shotgun generally runs cleanly. This break-in behavior is common enough that it comes up in most reviews.

The Mobilchoke compatibility is a practical positive. Standard chokes are widely available and inexpensive, so users are not locked into proprietary options.

Value is a recurring theme. The Viper G2 competes against Beretta A300 and Stoeger alternatives, and buyers generally find TriStar's price competitive for the feature set. Those who have had reliability issues post-break-in are more critical of that value comparison.

Accessory availability is the main gap. Aftermarket stocks and other model-specific accessories are more limited than for established platforms.