The TriStar Viper Max is a 12 GA semi-automatic shotgun with a gas-operated action, 28-inch vent ribbed chrome-lined barrel, 3.5-inch chamber, fixed synthetic stock, and 7.40 lb. weight. The MobilChoke system, fiber optic front sight, and crossbolt safety round it out. 
 

Key Specifications 

• Model: Viper Max 
• UPC: 713780241821 
• Action: Semi-Automatic 
• Gauge: 12 Gauge 
• Capacity: 5+1 Rounds 
• Barrel Length: 28 inches 
• Chamber Length: 3.5 inches 
• Weight: 7.40 lbs. 
• Stock Description: Fixed Synthetic Stock 
• Finish: Black Steel with Blued/Black Metal Finish 
• Sights: Fiber Optic Front Sight 
• Safety Feature: Crossbolt Safety 
   

Features 

The gas-operated system reduces recoil while keeping cycling smooth across different load types. The chrome-lined barrel resists corrosion and maintains consistent performance over time. The 3.5-inch chamber takes heavy waterfowl and turkey loads without modification. The MobilChoke system lets you swap patterns quickly for different game or course conditions. At 7.40 lbs., the Viper Max is stable when shooting but comfortable to carry through a full day in the field. 
 

Who It's For 

Hunters working trap, skeet, or waterfowl who want a 3.5-inch capable semi-auto without paying premium prices. Also works for small-game and clay shooting where reliable gas-operated cycling matters. 
 

Uses 

• Upland and waterfowl hunting with interchangeable chokes 
• Trap and skeet where rapid successive shots are needed 
• Home defense backup when reliability is the priority

The Viper Max's main selling points in user discussions are versatility and price. Owners appreciate that it handles different load types and a 3.5-inch chamber at this cost. The gas system gets credit for smooth cycling and reduced recoil.

Reliability feedback is mixed -- some users report clean operation across all ammo types, while others mention the need for a break-in period or encounter occasional cycling issues. Build quality impressions vary; the gun feels solid to most owners but a few compare specific components unfavorably to higher-end semi-autos. At the price, the Viper Max delivers what most hunting and range shooters need, with the understanding that it's not a premium gun.