The Battle Arms Development Mil-spec buffer stands out as an excellent option for any AR15/M16 build. Capable of fitting seamlessly into any collapsible AR15/M16 buffer tube these buffers are engineered for durability and longevity. This Mil-Spec buffer is designed for AR15/M16 carbines equipped with a collapsible stock. It is ideal either for new builds or as a direct replacement for parts showing signs of wear. Weighing in at a solid 3.8 ounces it offers the heft and reliability desired in a high-quality buffer.