S1T-HF S1TN0102 S1-TS01800-00 S-1-U-2-D S-1-U-2-D D/C .670 OAL S-1-U-2-G S-1-U-2-G D/C .670 OAL S-1-U-3.8-D S-1-U-3.8-D D/C .670 OAL S-1-U-3.8-G