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Winchester SX4 Defender 12 Gauge 18 in. Shotgun

SKU 1213017
MPN 512435395

Winchester's 12 ga. SXP Defender shotgun features an 18" barrel, 3" chamber, and Woodland FDE finish for tactical versatility and maneuverability.

Caliber12GACapacity5 rdBarrel18"ActionSemi-Auto

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Winchester SX4 Defender 12 Gauge 18 in. Shotgun

Call for Price

Call for PriceCall us at 800-727-6914 for pricing & availability

Out of StockFFL Transfer Required

10% backEnds Oct 31Details

Ships to your local FFL dealer

Federal law requires firearms ship to a licensed dealer near you — pick yours at checkout and finish a quick background check at pickup.

How buying a firearm online works

Trusted Since 2013
A+ BBB Accredited
35,000+ Reviews
Secure Checkout

Winchester SX4 Defender 12 Gauge 18 in. Shotgun

Call for Price

Rebates & Promotions

Paid by the manufacturer after you buy. It is not taken off at checkout.

Winchester Repeating ArmsManufacturer rebate

10% back

Winchester Repeating Arms Fall 10% Back Rebate

Buy between Oct 1 and Oct 31 (8 days left)

Submit your claim by Nov 15.

Qualifying models and amounts

Buy any new Winchester Repeating Arms firearm and get 10% back. Offer valid only on the consumer retail purchase of eligible new Winchester Repeating Arms firearms between October 1 and October 31, 2026.

Offer details and terms

Get 10% back on the purchase of any new Winchester Repeating Arms firearm. Purchases must be made at retail between October 1 and October 31, 2026. Submit your claim online at rebates.winchesterguns.com by midnight November 15, 2026. Limited to one submission per firearm serial number, and open to US citizens and legal residents only.

End users only; employees, dealers and their staff excluded. One submission per firearm serial number. Purchases must come from in-store inventory, no rain checks or prepayments. Submit online at rebates.winchesterguns.com with supporting documents by midnight November 15, 2026. US citizens or legal residents only. Allow 2-3 weeks for processing.

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About this product

The Winchester SXP Defender Shotgun in 12 ga. with an 18-inch barrel in Woodland FDE is designed for those who prioritize reliability and performance in high-stakes situations. This semi-automatic shotgun is built on the trusted SXP platform, known for its robust construction and smooth operation, making it an ideal choice for home defense or tactical applications. The 18-inch barrel offers a compact profile, allowing for easy maneuverability in tight spaces, while the 3-inch chamber accommodates a wide range of ammunition, from birdshot to buckshot, ensuring versatility in various scenarios. The Woodland FDE finish not only provides a tactical aesthetic but also offers durability against the elements, making it suitable for outdoor use. The shotgun features a comfortable grip and intuitive controls, allowing for quick handling and follow-up shots when necessary. Whether you are a seasoned hunter or a first-time buyer looking for a dependable firearm, the Winchester SXP Defender stands out as a formidable option that combines functionality with ease of use, making it a reliable companion in any critical situation. With its proven performance and thoughtful design, this shotgun is a valuable addition to any firearm enthusiast's collection.