Winchester USA White Box 5.56x45mm NATO 55 Grain M193 Full Metal Jacket Bulk Case (MPN: WM1931000)
Product Description
Maintaining tactical proficiency requires relentless range work, but burning through individual boxes of carbine ammunition can quickly become an organizational and financial logistical bottleneck. Winchester answers this demand with their USA White Box 1,000-Round Bulk Case. Packed loose to slash extraneous retail packaging and lower your baseline cost-per-round, this case provides a massive, uninterrupted pipeline of ammunition. It is the definitive solution for tactical training centers, firearms instructors, high-volume competitive shooters, and individuals dedicated to establishing a resilient, long-term defensive stockpile.
This 5.56x45mm NATO powerhouse is manufactured to strict military-specification M193 standards, featuring an industry-standard 55-grain Full Metal Jacket (FMJ) boat-tail projectile. The bullet’s profile is optimized for slick feeding up modern sporting rifle feed ramps, while its traditional lead-core and copper-jacket architecture resists deformation during intense firing cycles. Each round is built around clean-burning, mil-spec propellants and non-corrosive Boxer primers seated into military-grade, heavy-walled brass cases. Left unpolished to preserve the natural structural integrity resulting from factory induction annealing, these cases provide excellent structural ductility and are highly prized for long-term reloadability.
On the firing line, this ammunition delivers the identical pressure curves and snappy impulse needed to properly cycle standard carbine and mid-length gas systems. It drives the 55-grain projectile out of the muzzle at a flat-shooting 3,180 FPS with 1,235 ft-lbs of kinetic energy, giving marksmen a reliable, repeatable point-of-aim/point-of-impact zero that translates perfectly across tactical optics, LPVOs, and iron sights. The primers are perimeter-sealed to lock out humidity and environmental moisture, ensuring that whether these rounds are loaded immediately into hard-running magazines or stored away in sealed cans for a rainy day, they will ignite flawlessly when the trigger is pressed.
*Armorer Bench Notes & Shipping Restrictions: Ammunition procurement guidelines strictly apply. All purchasers must be 21 years of age or older and assume total responsibility for compliance with all local, state, and federal laws. Due to commercial carrier safety rules, ammunition cannot be shipped via air or delivered to Alaska, Hawaii, or US territories. Shipments heading to California and New York must be routed directly to an authorized FFL dealer or registered ammunition vendor. Residents of Illinois must submit valid FOID cards paired with matching state IDs prior to fulfillment, and local delivery prohibitions restrict shipping to certain jurisdictions within Illinois (such as Chicago), Massachusetts, Connecticut, and Washington D.C. Technical Notice: This is full-pressure 5.56x45mm NATO military ammunition; ensure your firearm is explicitly stamped for 5.56x45mm NATO or .223 Wylde before firing. Do not use this high-pressure ammunition in legacy or tight-tolerance bolt-action rifles marked strictly for .223 Remington.
Key Features
- **Genuine Mil-Spec M193 Performance:** Loaded to precise military pressure and velocity standards to guarantee flawless cycling in modern combat rifles.
- **1,000-Round True Bulk Case:** Loose-packed layout maximizes storage space within tactical ammo cans and drives down the individual cost-per-round.
- **Induction-Annealed Brass:** The heat-treated shell case shoulder ensures superior case structural integrity under extraction stress and permits multiple reloading cycles.
- **Moisture-Sealed Primers:** Boxer primers feature a weather-resistant sealant ring around the pocket to guarantee reliable ignition across decades of storage.
- **Slick-Cycling FMJ Bullet:** The classic 55gr spitzer projectile shape avoids feed-ramp snags, ensuring consistent feeding through high-capacity magazines.
Product Specifications
- **Brand:** Winchester Ammunition
- **Product Line:** USA White Box
- **Caliber:** 5.56x45mm NATO
- **Bullet Weight:** 55 Grain
- **Bullet Type:** Full Metal Jacket (FMJ) / M193 Ball
- **Muzzle Velocity:** 3,180 FPS
- **Muzzle Energy:** 1,235 ft-lbs
- **Casing Material:** Brass (Annealed, Reloadable)
- **Primer Type:** Boxer (Sealed, Non-Corrosive)
- **MPN:** WM1931000
- **UPC:** 020892225084
- **Box Quantity:** 1000 Rounds
