DAY & ZIMMERMANN LONE STAR LLC

Day & Zimmermann Lone Star LLC specializes in the precision manufacturing of ammunition components and explosive systems for defense applications, with deep expertise in percussion primers, fuzes, grenade assemblies, and combustible cartridge cases. The contractor delivers mission-critical components under stringent military specifications, demonstrating proficiency in high-volume production, lot traceability, and rapid scale-up to meet urgent operational demands. Their technical capabilities include chemical formulation for explosives, precision machining of metallized components, and integration of safety-critical ignition systems compliant with MIL-STD and NATO standards. A key differentiator is their ability to execute complex production modifications, extend delivery timelines under dynamic requirements, and implement progress payment structures—indicating mature contract administration and agile manufacturing workflows. The company maintains a consistent, exclusive relationship with the Department of Defense, supplying munitions and related chemical systems across multiple branches and combatant commands. Work includes direct support to contingency operations, including foreign military sales and urgent warfighting needs, with a focus on sustaining and expanding production capacity for high-demand ordnance items. Their primary industry focus lies in ammunition manufacturing (NAICS 332993), with complementary expertise in explosives manufacturing (325920) and specialized chemical formulations (325998), positioning them as a niche supplier within the defense industrial base for non-small arms munitions. They operate as a small business under the 2L entity structure, with no federal certifications on record. Located in Texarkana, Texas, the firm serves as a geographically strategic provider within the U.S. defense supply chain, delivering mission-essential ordnance with a focus on reliability, regulatory compliance, and responsive production scaling.