My son bought a Herters model U9 .270 bolt action rifle from an estate sale. The rifle shoots great but has a broken magazine spring. I've checked Numerich gun parts and Midway gun parts with no success. Herters rifles were manufactured by BSA in the late 60's and early 70's. I've emailed BSA also. They referred me to a store but I can't get a reply back. Would anyone know where I might be able to find another spring? Thanks