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 S-1-U-3.8-G D/C .670 OAL S-1-U-3.8-G-W/L D/C .670 OAL S1U-3X-16-A-12-RC