The Winchester SX4 is a 12-gauge semi-automatic shotgun with a matte black composite stock and matte steel/aluminum receiver. It holds 4+1 rounds of 2-3/4-inch shells in a 3-inch chamber. The barrel is 28 inches and overall length is 49 inches. Weight is 7 lbs. 
 

Key Specifications 

• SKU: 1794001847 
• UPC: 048702006890 
• Brand: Winchester 
• Model Name: SX4 
• Action Type: Semi-Automatic 
• Caliber/Gauge: 12 GA 
• Chamber Length: 3" 
• Barrel Length: 28" 
• Overall Length: 49" 
• Weight: 7 lbs (112 oz) 
• Capacity: 4+1 RD (for 2-3/4" shells) 
• Sights: Truglo Long Bead Fiber Optic Front 
• Grip Type: Standard Composite Stock with Textured Grip Panels 
• Trigger Type: Standard Drop-Out Trigger 
• Safety Feature: Ambidextrous Crossbolt Safety 
• Finish Color/Material: Matte Black Aluminum Alloy receiver, Matte Steel barrel, Matte Composite stock 
   

Features 

The Invector Plus choke system includes Full, Modified, and Improved Cylinder tubes. The TruGlo fiber optic front sight is useful in low-light conditions. The Inflex technology recoil pad reduces felt recoil to a degree. The aluminum alloy receiver keeps weight at 7 lbs. while remaining structurally solid. The drop-out trigger group can be removed for cleaning without disassembling the entire gun. The ambidextrous crossbolt safety is accessible from either side of the trigger guard.

The SX4 in matte black gets consistent positive marks for cycling reliability across a wide range of loads, from light 2-3/4" target shells to heavier hunting rounds. The semi-auto action cycles quickly and follow-up shots are fast. Ergonomics are well-regarded, and the 7-lb. weight is comfortable for most shooters during a full day in the field.

The matte black finish is practical and holds up reasonably well to field use. Some owners note the finish shows wear with heavy use over time, which is a common consideration for matte coatings.

Capacity at 4+1 works for most hunting applications. A few competitive shooters would prefer more rounds without reloading. Minor break-in issues with specific lighter ammunition types are occasionally reported, but these seem to resolve after the first few boxes. Overall sentiment is positive, with the SX4 viewed as a reliable, no-frills semi-auto at a reasonable price.