Shotgun | Semi-AutomaticWinchesterSold by Sportsmans Guide

Winchester

Winchester SX4 Semi-auto 12 Gauge 28" Barrel 4+1 Rounds

Our editorial team reviews specifications, product data, and field-use information to keep pages accurate.

Self-adjusting Active

Valve gas system for consistent

Synthetic Stock

Textured grip panels for secure

Matte Black

Non-glare finish for a low-profile

Back-bored Barrel

Invector-Plus choke system for shot

Hard Chrome-plated

Chamber and bore for added

$999.99
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SKU: WX2*0748347

Overview

Built for hunters who want a dependable autoloader, this 12-gauge shotgun combines a matte black non-glare finish with a synthetic stock and textured grip panels for a practical, field-ready setup. The self-adjusting Active Valve gas system, Quadra-Vent ports, and drop-out trigger group are aimed at smoother cycling and easier maintenance, while the oversized bolt handle and release support quick, straightforward operation. A back-bored barrel, Invector-Plus choke system, and included Full, Modified, and Improved Cylinder chokes give it flexibility for different shot patterns and hunting situations. With a 3.5" chamber, ambidextrous crossbolt safety, and length-of-pull spacers, it offers a configurable option for serious use in changing conditions.

Why Hunters Choose the Winchester

Self-adjusting Active

Valve gas system supports reliable

Synthetic Stock

Textured grip panels offers a

Matte Black

Non-glare finish suits low-profile hunting

Back-bored Barrel

Invector-Plus choke system support controlled

Truglo Long

Bead fiber-optic front sight and

Key Features

  • Self-adjusting Active Valve gas system for consistent cycling in changing conditions.
  • Synthetic stock with textured grip panels for secure handling.
  • Matte black non-glare finish for a low-profile look.
  • Back-bored barrel and Invector-Plus choke system for shot pattern control.
  • Hard chrome-plated chamber and bore for added durability.
  • Truglo Long Bead fiber-optic front sight with vent rib for clean sighting.
  • Includes Full, Modified, and Improved Cylinder chokes.

Best Used For

  • Hunters wanting a 12 gauge autoloader for all-weather field use and straightforward handling
  • Users who prefer a synthetic-stock shotgun with textured grip panels and a non-glare finish
  • Shotgunners needing quick sight acquisition with a fiber-optic front sight and vent rib
  • Hunters who value adjustable fit options, including length of pull spacers and ambidextrous controls
  • Those looking for a 3.5-inch chamber shotgun compatible with magnum loads and included choke options

Specifications

ActionSemi-auto
BarrelBack-bored barrel
Barrel Length28"
Blade FinishMatte black non-glare finish
Bolt HandleOversized bolt handle
Bolt ReleaseOversized bolt release
Capacity4+1 Rounds
Chamber And BoreHard chrome-plated chamber and bore
Chamber Length3.5"
Choke SystemInvector-Plus choke system
Chokes IncludedFull, Modified, and Improved Cylinder
ErgonomicsImproved ergonomics
Front SightTruglo Long Bead fiber-optic front sight
Gas SystemSelf-adjusting Active Valve gas system
Gauge12 Gauge
Length Of Pull AdjustmentLength of pull spacers
MaintenanceEasy maintenance
PortsQuadra-Vent ports
Recoil PadInflex recoil pad
RibVent rib
SafetyAmbidextrous crossbolt safety
StockSynthetic stock with textured grip panels
Trigger GroupDrop-out trigger group
Weather ResistanceReliable performance in any weather

Pros

  • Self-adjusting Active Valve gas system supports reliable cycling in varied conditions.
  • Synthetic stock with textured grip panels offers a secure, practical hold.
  • Matte black non-glare finish suits low-profile hunting use.
  • Back-bored barrel and Invector-Plus choke system support controlled shot patterns.
  • Truglo Long Bead fiber-optic front sight and vent rib aid clean sighting.
  • Drop-out trigger group and oversized controls simplify handling and maintenance.

Considerations & Trade-offs

  • The 28" barrel and 3.5" chamber make this a versatile setup, but it is less compact than shorter-barreled options for tight cover or faster maneuvering in confined spaces.
  • The synthetic stock with textured grip panels and matte black non-glare finish favor practical use over traditional styling, which may matter if you prefer a more classic field look.
  • Included Full, Modified, and Improved Cylinder chokes provide flexibility, but selecting the right choke still depends on the load and the hunt rather than offering a single all-purpose setting.
  • As a 4+1-round autoloader, it offers practical capacity, but it remains a semi-auto platform that requires routine cleaning and maintenance to keep operating smoothly.

Suggested Comparisons

  • Waterfowl shotgun
  • Upland hunting shotgun
  • Turkey hunting shotgun
  • Semi-auto shotgun

Suggested Accessories

  • Choke tubes
  • Shotgun cleaning kit
  • Gun case
  • Recoil pad

Frequently Asked Questions

What gauge and chambering does the Winchester SX4 use?

This model is a 12 gauge shotgun with a 3.5" chamber compatible with magnum loads.

What comes included with the shotgun?

The listed included chokes are Full, Modified, and Improved Cylinder.

What type of sighting setup does it have?

It is listed with a Truglo Long Bead fiber-optic front sight and a vent rib for clean sighting.

Does the SX4 have features for easier maintenance?

Yes. The description lists a drop-out trigger group for easy maintenance.

What controls and fit features are mentioned?

The SX4 is listed with an ambidextrous crossbolt safety, oversized bolt handle and release, length of pull spacers for custom fit, and an Inflex recoil pad.