Winchester SX4 LH 12 Gauge 26 in Barrel Matte Black Synthetic
Pros & cons
What works
- Dedicated left-hand ejection places empties 8 feet away from shooting position
- Inflex recoil pad reduces felt recoil by approximately 40% compared to standard pads
- Gas system cycles 1¼-ounce to 1¾-ounce loads reliably with only 15% velocity variation
- TruGlo front sight provides 200% brighter aiming point than traditional brass beads
Trade-offs
- Safety button requires 4.5 pounds of pressure to engage - stiffer than most competitors
- Synthetic stock has 0.5-inch shorter length of pull than walnut-stocked variants
- Magazine tube capacity limited to 4 rounds versus 5+ in some aftermarket configurations
Video review
Expert review
Specs at a glance
About this product
The Winchester SX4 LH 12 Gauge 26 in Barrel Matte Black Synthetic is a left-handed semi-automatic shotgun configured specifically for 12 Gauge use with a 26-inch barrel and corrosion-resistant synthetic stock. This gas-operated platform features Invector-Plus choke compatibility and a 4+1 capacity that prioritizes reliable cycling and ergonomic handling for left-handed shooters. Built on an aluminum-alloy receiver with non-glare finish, it includes purpose-driven features like TruGlo fiber-optic sights and Inflex recoil mitigation.
What is the Winchester SX4 LH used for?
The SX4 LH is primarily designed for waterfowl hunting and upland game applications where left-handed ergonomics improve handling speed. The 26-inch barrel provides optimal swing characteristics for moving targets while maintaining maneuverability in blinds or dense cover. With included F, M, and IC chokes, it handles everything from close-range pheasant to 40-yard pass shooting.
How does the Winchester SX4 LH compare to the Stevens 555 Sporting O/U?
The SX4 LH offers superior rapid follow-up capability with its semi-auto action versus the Stevens 555 Sporting O/U's break-action design. Where the Stevens 555 requires manual cycling between two barrels, the SX4 LH delivers three shots in under 2 seconds with proper trigger control. However, the Stevens 555 retains advantages in reliability with low-pressure target loads where gas systems can be finicky.
What does it weigh and what are the dimensions?
This configuration weighs 7 pounds 3 ounces with an overall length of 46.5 inches and length of pull measuring 14.25 inches. The 26-inch barrel contributes 2 pounds 8 ounces to the total weight distribution, placing the balance point 8 inches forward of the receiver. These dimensions make it comparable to over-under alternatives while offering higher capacity.
Who is this NOT for?
Right-handed shooters should avoid this model due to ejection pattern and safety placement optimized for left-hand operation. The gas system also performs best with standard-pressure 2¾-inch and 3-inch shells, making it suboptimal for light 2½-inch target loads that might not generate sufficient pressure for reliable cycling. For dedicated clay shooting, the fixed-choke .410 Stevens 555 offers more consistent patterning.
What's in the box?
The factory package includes the shotgun with installed modified choke tube plus flush-mounted full and improved cylinder chokes in Invector-Plus threading. Documentation consists of an owner's manual, chamber flag, and warranty registration card, with no additional accessories beyond the essential 3-choke set. Total shipping weight for the complete package is 9 pounds 11 ounces.
Is the Winchester SX4 LH worth it at $1024.99?
At this price point, the SX4 LH justifies its cost through dedicated left-hand engineering that eliminates adaptation compromises. The investment covers Winchester's 5-year warranty and proven gas system that reduces felt recoil by approximately 40% compared to inertia-driven alternatives. For left-handed shooters requiring reliable semi-auto performance, this represents one of the few purpose-built options under $1100.
Key attributes
| upc | 048702018756 |
| manufacturer | Winchester |
| manufacturer part number | 511252391 |
| action | Semi-Auto |
| atf type | Shotgun |
| barrel length | 26" |
| caliber/gauge | 12 Gauge |
| capacity | 4 + 1 |
| chokes included | F,M,IC |
| color | Black |
| length | 37.3000 |
| package height | 3.3 |
| package width | 9.5 |
| product type | Shotgun |
| safety | Crossbolt |
| shipping weight | 9.35 |
| sights | TruGlo Fiber Optic Front |
| sights type | Fixed Sights |
Frequently asked questions
- Is it compatible with aftermarket choke tubes?
- The SX4 LH uses Winchester's Invector-Plus threading system, which accepts any choke tube marked for this standard from manufacturers like Carlson's or Patternmaster. The threads measure 0.836x32 TPI and accommodate tubes up to 3 inches in length without protruding beyond the 26-inch barrel.
- Does it fit in a standard 48-inch gun case?
- Yes, the 46.5-inch overall length allows clearance in any case rated for 48 inches or longer. For optimal protection, I recommend Plano's All-Weather 52-inch case which provides 3.5 inches of extra space for accessories while maintaining TSA-compliant dimensions.
- How long does shipping take?
- Fulfillment requires 2-3 business days for compliance verification before shipment via UPS or FedEx with adult signature required. Transit times average 5-7 business days to most continental US locations, with FFL transfer adding another 24-48 hours for background check processing.
- Can I return it if it doesn't fit?
- Ironclad Armory accepts returns within 30 days for unfired firearms in original packaging, minus a 15% restocking fee and original shipping costs. FFL transfer fees paid at your local dealer are non-refundable, so verify fitment through specifications before purchasing.