S-1-B-3.8-D D/C .670 OAL S-1-B-3.8-D S-1-B-2-G D/C .670 OAL S-1-B-2-G S-1-B-2-D D/C .670 OAL S-1-B-2-D S1B-13-F S1B13F S1B-13 S1B+