S1B20516 S1B20517 S1B28-M5T1S S-1-B-2-D S-1-B-2-D D/C .670 OAL S-1-B-2-G S-1-B-2-G D/C .670 OAL S-1-B-3.8-D S-1-B-3.8-D D/C .670 OAL S-1-B-3.8-G