b'AR-SOB AND BUFFER SPRINGS The AR-SOB provides reciprocating weights which dampen recoil and provide a smoother shooting carbine. Buffers are one of the more overlooked components but can reduce mechanical and critical failures. MSRP: $54.95The BUFFER SPRINGS are manufactured from 17-7 stainless steel wire, offer excellent resistance to corrosion, superior fatigue properties, and exceptional rigidity and durability. MSRP: $8.95189'