| Precision Defense Springs, Stampings & Assemblies for Mission-Critical Performance
Engineered for firearms, defense systems, and rugged applications where durability, consistency, and dependable function matter most
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CSS produces nearly 500 different precision metal parts for firearms and weapons systems, serving the industry for decades with trusted expertise. We have built strong, longstanding relationships with leading OEMs such as Sig Sauer, Smith & Wesson, Magpul, Olin Winchester, Raytheon, Sturm Ruger, Palmetto, Remington Arms, and Taurus. These partnerships are rooted in our proven ability to develop, test, and deliver innovative technologies that meet evolving defense and firearms requirements. Drawing on our extensive experience and cross-industry knowledge—from medical devices to aerospace—we provide proactive support throughout every stage of a project. Our customers value our agility and commitment to meeting demanding schedules, budgets, and volume production targets, helping them stay ahead in a rapidly changing market.
We are frequently entrusted with producing challenging, tight-tolerance components and assemblies for both government contracts and the consumer market. Our precision parts are integral to many well-known firearms brands, empowering our clients to launch innovative products that exceed their customers’ specifications and performance requirements.
For over 75 years, CSS has been manufacturing government and defense products in full compliance with the Buy America Directive. As an approved government supplier, we consistently meet stringent government purchasing requirements and industry standards.
In addition to OEM projects, CSS offers an extensive line of original equipment and replacement parts, including sear springs and links, specifically designed for the AR-15/M16/M4 and AK family of firearms. For detailed parts lists and ordering information, please visit our Gun Parts Shop.
