CSS (Connecticut Spring & Stamping) has manufactured all types of precision progressive die and fine blanked stampings for nearly 80 years, specializing in tight tolerance small components for hand guns and stocking parts for the AR platform. The firearms industry also relies on CSS for all types of precision springs, including shaped and stranded wire. CSS is ISO9001-certified with 450 employees in over 200,000 square feet of manufacturing space. They offer magazines, slide stops, trigger bars, ejectors, struts, recoil springs, magazine springs, compression, extension and torsion springs (less)