| | Optical Post, 19.1 mm Height, 12.7 mm Diameter, M4 and M6 Threads | METRIC | | | | |
| | Optical Post, 25.4 mm Height, 12.7 mm Diameter, M4 and M6 Threads | METRIC | | | | |
| | Optical Post, 38.1 mm Height, 12.7 mm Diameter, M4 and M6 Threads | METRIC | | | | |
| | Optical Post, 50.8 mm Height, 12.7 mm Diameter, M4 and M6 Threads | METRIC | | | | |
| | Optical Post, 63.5 mm Height, 12.7 mm Diameter, M4 and M6 Threads | METRIC | | | | |
| | Optical Post, 76.2 mm Height, 12.7 mm Diameter, M4 and M6 Threads | METRIC | | | | |
| | Optical Post, 0.75 in. Height, 0.5 in. Diameter, 8-32 & 1/4-20 Thread | IMPERIAL | | | | |
| | Optical Post, 1.0 in. Height, 0.5 in. Diameter, 8-32 and 1/4-20 Thread | IMPERIAL | | | | |
| | Optical Post, 1.5 in. Height, 0.5 in. Diameter, 8-32 and 1/4-20 Thread | IMPERIAL | | | | |
| | Optical Post, 2.0 in. Height, 0.5 in. Diameter, 8-32 and 1/4-20 Thread | IMPERIAL | | | | |
| | Optical Post, 2.5 in. Height, 0.5 in. Diameter, 8-32 and 1/4-20 Thread | IMPERIAL | | | | |
| | Optical Post, 3.0 in. Height, 0.5 in. Diameter, 8-32 and 1/4-20 Thread | IMPERIAL | | | | |