The Armaspec braided buffer spring - BBS is a revolutionary new buffer spring that provides improved performance, reliability, and functionality to your standard mil-spec buffer spring. It is designed with 51 active coils to give tighter tolerances while being compressed and the three strand design allows for the energy from the bolt carrier to be absorbed and dispersed evenly during cycle time. This results in a smoother, quieter, and more reliable weapon system. Utilizing this technology gives you more than double the life of a standard mil-spec buffer spring.