Ed Brown, Swenson, and Power Custom all seem to be making black buffers currently, so it may not be quite as old as you think. These are just the name brands I found.
NOTE: SHOK-BUFF® buffers are recommended for full-size (5" barrel) 1911's only. Due to space constraints, we do not recommend their use in compact (less than 5" barrel) 1911's. The SHOK-BUFF® is also recommend in the EDC X9 pistol.