Winchester USA White Box 5.56x45mm NATO 55 Grain M193 Full Metal Jacket Value Pack (MPN: WM193150)
Product Description
High-volume carbine courses, tactical duty drills, and recreational range days can deplete an ammunition supply rapidly, making it difficult for shooters to log necessary trigger time without excessive costs. Winchester eliminates this burden with their USA White Box M193 Value Pack, a standard-issue response built to provide budget-conscious performance without stripping away real-world dependability. This 150-round loose-packed bulk box lets modern sporting rifle owners and tactical marksmen load up multiple magazines back-to-back, establishing a highly reliable pipeline for tactical training, firearm validation, and disaster preparedness stockpiling.
Engineered to meet classic mil-spec performance parameters, this 5.56x45mm NATO cartridge is loaded with a standard 55-grain Full Metal Jacket (FMJ) spitzer projectile. The bullet design delivers positive feeding up the ramps of hard-running semi-automatic or fully automatic platforms, resisting deformation while ensuring no expansion upon hitting steel or paper targets. The core architecture centers on clean-burning mil-spec propellants and robust Boxer primers seated firmly into heavy-duty, internal-pressure-resistant brass cases. The visible coloration change on the case shoulder is a byproduct of the standard factory annealing heat-treatment process, a hallmark of duty-grade brass left unpolished to ensure maximum structural integrity and high ductility for high-volume extraction stress.
Out on the firing line, this M193 platform delivers the iconic snappiness and reliability expected from standard combat configurations. Leaving a 20-inch test barrel at a rapid 3,180 FPS with 1,235 ft-lbs of muzzle energy, it tracks flat past mid-range thresholds, allowing shooters to match factory zero metrics across most standard optics and backup iron sights. The primers feature a weather-resistant sealant applied around the pocket perimeter to repel ambient moisture, protecting your backup supply during extended field storage. It remains an industry staple for keeping your carbines running hard and your tactical foundations completely sharp.
*Armorer Bench Notes & Shipping Restrictions: Ammunition acquisition guidelines strictly apply. All buyers must be 21 years of age or older and assume total responsibility for compliance with local, state, and federal laws. Due to commercial carrier limitations, ammunition cannot be delivered to Alaska, Hawaii, or US territories. Shipments destined for California and New York must be routed straight to an authorized FFL dealer or a registered ammunition vendor. Residents of Illinois are required to submit valid FOID cards paired with a matching state ID prior to order 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 a 5.56x45mm NATO military-specification cartridge that develops higher chamber pressures than standard .223 Remington ammunition; do not chamber or fire this ammunition in specialized bolt-action or legacy rifles marked strictly for .223 Remington to ensure safe operational limits.
Key Features
- **Mil-Spec M193 Loading:** Tailored specifically to replicate the velocity and pressure profile of military-issue 55-grain target cartridges.
- **Value Pack Efficiency:** Bulk loose-packed 150-round internal box layout drastically minimizes retail packaging waste and lowers the overall cost-per-round.
- **Annealed Brass Casings:** Heat-treated shell cases provide exceptional durability, preventing neck splits and ensuring top-tier reloading material.
- **Weather-Sealed Primers:** Features clean-burning, non-corrosive Boxer primers with protective sealant rings to guarantee absolute ignition over long storage windows.
- **Positive Feeding Profile:** The classic 55gr FMJ spitzer design guarantees glass-smooth cycling through standard AR-15 M4 feed ramps and high-capacity magazines.
Product Specifications
- **Brand:** Winchester Ammunition
- **Product Line:** USA White Box (Target & Practice)
- **Caliber:** 5.56x45mm NATO
- **Bullet Weight:** 55 Grain
- **Bullet Type:** Full Metal Jacket (FMJ) / M193
- **Muzzle Velocity:** 3,180 FPS
- **Muzzle Energy:** 1,235 ft-lbs
- **Casing Material:** Brass (Annealed, Reloadable)
- **Primer Type:** Boxer (Sealed, Non-Corrosive)
- **MPN:** WM193150
- **UPC:** 020892225008
- **Box Quantity:** 150 Rounds
