The TriStar Viper G2 Compact Two-Stock 20 Gauge, 24″ Barrel is a gas-operated semi-auto shotgun built to grow with the shooter. It ships with a youth stock installed and an adult stock plus a 2″ barrel extension in the box, letting you adjust the length of pull without buying a second gun. The chrome-lined barrel and chamber resist corrosion and simplify cleanup, while the manual E-Z Load magazine cut-off and cross-bolt safety keep operation familiar. This is a versatile 20-gauge platform for upland birds, clays, and small game that adapts to a wide range of shooters.
| Manufacturer | TriStar Sporting Arms |
|---|---|
| Model | Viper G2 Compact Two-Stock |
| Gauge | 20 Gauge, 3″ chamber |
| Barrel Length | 24″ vent-rib |
| Stock Material | Synthetic (black) |
| Finish | Matte black anodized receiver, chrome-lined barrel |
| Weight | 5.6 lbs (per manufacturer specs) |
| Condition | New |
Key Features
- Two-Stock Combo System: The included youth stock and separate adult stock plus 2″ barrel extension let you dial in length of pull from 12.5″ to 14.5″ — one gun that fits a 12-year-old and a 6-foot adult without compromise.
- Gas-Operation with Self-Cleaning Piston: The inertia-assisted gas system cycles everything from 2¾″ target loads to 3″ magnums reliably, and the self-cleaning piston means less time scrubbing carbon and more time shooting.
- Chrome-Lined Barrel and Chamber: Chrome lining resists corrosion and fouling buildup, extending barrel life and making bore cleaning a quick pass with a patch — critical for hunters in wet weather or salt marsh environments.
- E-Z Load Magazine Cut-Off: A manual lever on the receiver lets you lock the magazine while clearing the chamber or unloading a single shell, giving you positive control over what’s in the gun.
- Cross-Bolt Safety with Reversible Tang: The safety button sits at the rear of the trigger guard where your finger finds it naturally, and the tang can be reversed for left-handed shooters — no gunsmith needed.
Who It’s For
This shotgun is for the shooter who wants one platform that covers multiple shooters — a parent teaching a teenager, a small-framed adult who needs a shorter LOP, or a youth shooter transitioning to an adult stock. It’s also for the tech-savvy hunter who values corrosion resistance and minimal maintenance. The Viper G2 Compact Two-Stock is a smart pick for anyone who wants to standardize on a single 20-gauge semi-auto for upland birds, sporting clays, and small game.
Pros & Cons
- Pro: Two stocks in the box at a single-gun price — no need to buy a separate youth model later.
- Pro: Chrome-lined barrel and chamber mean less maintenance and longer life, especially for shooters who run high volumes of target loads.
- Pro: Gas system is soft-shooting and cycles reliably across a wide range of shells.
- Con: The synthetic stock has a slightly hollow feel compared to walnut stocks on higher-end shotguns — acceptable at this price point, but not premium.
Comparison vs. Competitors
| Feature | TriStar Viper G2 Compact Two-Stock | Mossberg 930 Blackwater | Stoeger M3020 |
|---|---|---|---|
| Gauge | 20 Gauge | 12 Gauge | 20 Gauge |
| Barrel Length | 24″ | 18.5″ | 26″ |
| Stock Adjustability | Two stocks + extension (12.5″–14.5″) | Fixed, 14″ LOP | Fixed, 14.25″ LOP |
| Chrome Lining | Yes (barrel + chamber) | No | No |
| Weight | 5.6 lbs | 7.0 lbs | 5.8 lbs |
| Magazine Cut-Off | Yes (E-Z Load) | No | No |
| Price | $706.50 | $599 | $479 |
The Viper G2 Compact Two-Stock offers a unique adjustability feature that neither the Mossberg 930 nor Stoeger M3020 provide — two stocks in one package. The chrome lining and magazine cut-off are additional upgrades you won’t find on those competitors at this price.
FAQ
Does the TriStar Viper G2 Compact Two-Stock come with both stocks installed?
No — the gun ships with the youth stock installed. The adult stock and 2″ barrel extension are included in the box, ready for you to swap. No tools are required beyond a screwdriver for the stock bolt.
Can this shotgun cycle light target loads reliably?
Yes. The gas system is tuned for a wide range of shells. Per TriStar specs, it cycles 2¾″ target loads (1 oz. or heavier) without issue. For the lightest 7/8 oz. loads, you may need to break it in with 100 rounds of 1 oz. loads first.
What is the length of pull with the adult stock?
With the adult stock installed and the 2″ barrel extension, the length of pull is approximately 14.5″. Without the extension, it’s about 13.5″. The youth stock gives you a 12.5″ LOP.
Is the TriStar Viper G2 Compact Two-Stock compatible with aftermarket chokes?
Yes — it uses standard Beretta/Benelli Mobil choke tubes, so you can swap in aftermarket extended or ported chokes for specific hunting or competition needs.
How do I clean the chrome-lined barrel?
Standard shotgun bore solvent and a brass brush work fine. The chrome lining resists plastic and lead fouling, so a few passes with a patch are usually enough. Avoid abrasive bore cleaners that could damage the chrome surface.
Why Buy from Us
- ✅ Nationwide delivery (all 50 states)
- ✅ Ships 1-2 business days
- ✅ 30-day returns
- ✅ Secure checkout
Explore more in our Semi Auto Shotguns category, check out Youth Shotguns for similar adjustable options, or browse Upland Shotguns for field-ready 20-gauges.
Last updated: April 2026
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