The Winchester SX4 is a semi-automatic 12-gauge shotgun with a 26-inch back-bored vent rib barrel, 3-inch chamber, and matte black finish. It ships with three Invector-Plus Flush chokes (F, M, IC) and TruGlo fiber optic front sight. 
 

Key Specifications 

• Model: SX4 
• Caliber: 12 GA 
• Action: Semi-Auto 
• Barrel Length: 26 inches 
• Overall Length: 49 inches 
• Capacity: 4+1 rounds 
• Chamber: 3 inches 
• Weight: 7 lbs (approx.) 
• Sights: TruGlo Fiber Optic Front Sight 
• Safety Mechanism: Crossbolt safety  
• Finish Color: Matte Black 
   

Detailed Features 

The back-bored vent rib barrel reduces recoil and improves shot patterns. TruGlo fiber optic front sight aids target pickup in variable light. The Inflex recoil pad further reduces felt recoil during extended sessions. The Invector-Plus Flush choke system accepts all Invector-Plus chokes. This model is configured for left-hand shooters with a left-hand stock, bolt handle, and safety layout. The crossbolt safety is easy to reach from either position.

Left-handed shooters discussing the Winchester SX4 Left-Hand 12 GA in Matte Black consistently appreciate the dedicated left-hand configuration -- stock geometry, bolt handle, and safety all mirrored from the standard model. Shell cycling is rated as smooth and reliable, with minimal jams reported under normal use. Fast follow-up shots and comfortable ergonomics are the most commonly cited strengths.

The matte black finish draws positive feedback for durability and appearance. Some users note sensitivity to specific lighter loads, recommending standard or heavier loads for reliable cycling. Weight sits at approximately 7 lbs., which most find manageable; some hunters would prefer slightly less for long carries. Aftermarket customization options come up as an area where the SX4 has fewer parts available compared to the most popular platforms. Overall feedback is favorable, with the left-hand designation making it a natural recommendation for southpaw shooters in the semi-auto field category.