The Adamson S20 W is a gas-operated 20-gauge semi-automatic shotgun built for hunters and sport shooters who want a lighter recoil platform without sacrificing reliability or handling. With its 28-inch barrel, Turkish walnut furniture, and aluminum receiver, this shotgun delivers a classic aesthetic alongside modern semi-auto convenience—perfect for upland game, clay shooting, or any situation where a nimble 20-gauge makes sense.
Gas-operated semi-automatics are known for smooth, predictable cycling, and the S20 W's four-round magazine capacity (5+1 with one in the chamber) keeps you in the field or on the line without excessive bulk. The 3-inch chamber handles standard and magnum 20-gauge loads, giving you flexibility in load selection depending on game and conditions. A fiber optic front sight provides a bright, fast aiming reference in low light, while the rubber buttpad tames recoil—especially appreciated in a lighter gauge gun.
Choke flexibility comes standard with a 5-piece interchangeable choke set and wrench included, so you can tailor your pattern from tight waterfowl work to open upland spreads. The walnut stock and foregrip give the S20 W a timeless, purposeful look that works whether you're heading to a duck blind or a clay course, and the aluminum receiver keeps overall weight manageable for long days afield.
Key Features
- Gas-operated semi-automatic 20-gauge for smooth, reliable cycling
- 28-inch barrel suited to versatile hunting and sport shooting
- 3-inch chamber accepts standard and magnum 20-gauge ammunition
- Turkish walnut stock and foregrip with durable rubber buttpad
- Fiber optic front sight for quick target acquisition in variable light
- 5-piece interchangeable choke set with wrench—customize your shot pattern on the fly
- Aluminum receiver for reduced weight without sacrificing strength
- 4+1 magazine capacity (5+1 with round in chamber)
Specifications
| Gauge | 20 |
| Barrel Length | 28 inches |
| Action Type | Semi-Automatic (Gas-Operated) |
| Chamber | 3 inch |
| Magazine Capacity | 4+1 / 5+1 |
| Receiver Material | Aluminum |
| Stock Material | Turkish Walnut |
| Buttpad | Rubber |
| Front Sight | Fiber Optic |
| Choke System | 5-piece interchangeable set with wrench |
Frequently Asked Questions
What ammunition does the Adamson S20 W shoot?
The S20 W is chambered in 3-inch 20-gauge and will cycle both standard and magnum 20-gauge loads, giving you flexibility in ammunition selection for different hunting and shooting applications.
How many shots does it hold?
The magazine holds 4 rounds, with an additional round in the chamber for a total of 5+1 capacity. The standard magazine configuration allows 4+1 total rounds ready to fire.
Does it come with chokes?
Yes. The S20 W includes a 5-piece interchangeable choke set and a wrench, so you can adjust your shot pattern to match your hunting or sport shooting needs without additional purchases.
Is the Adamson S20 W suitable for upland hunting?
The 28-inch barrel, light 20-gauge recoil, and interchangeable chokes make the S20 W well-suited to upland hunting. Its gas-operated action cycles cleanly, and the walnut furniture gives it a classic upland shotgun feel.
