

Product Description
Winchester Defender 5.56 is specifically designed for modern sporting rifles, delivering an effective balance of expansion, retained weight, and penetration for personal defense use. The Bonded Solid Base bullet design is engineered to provide maximum terminal performance with consistent impact, shock, and penetration, while features like low-flash performance help reduce visible signature in low-light conditions. Built for reliable function, this ammunition is intended to promote sure feeding when it matters most.
Product Highlights
- Defender Elite 5.56x45mm NATO personal defense rifle ammunition for modern sporting rifles
- 64 grain Bonded Solid Base projectile designed for expansion, weight retention, and penetration
- Sure-feeding design to support reliable cycling in semi-automatic platforms
- Low-flash performance helps minimize muzzle flash in low-light defensive scenarios
- New production, non-corrosive, boxer-primed and reloadable brass cases
Specs
- Brand: Winchester Ammunition
- Manufacturer Part Number: S556PDB
- UPC: 020892230293
- Cartridge: 5.56x45mm NATO
- Bullet Weight: 64 grain
- Bullet Type: Bonded Solid Base
- Rounds Per Box: 20
- Muzzle Velocity: 2800 feet per second
- Muzzle Energy: 1115 foot-pounds
- Case Type: Brass
- Primer: Boxer
- Corrosive: No
- Reloadable: Yes
- Country of Manufacture: United States of America
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