The Eyeguard,optical Instrument, cataloged under National Stock Number 1240-01-645-1371, is classified within Federal Supply Class 1240 (Optical Sighting and Ranging Equipment) of the Fire Control Equipment group. The manufacturer of record is Leupold & Stevens Inc. Government technical data includes 2 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 1240-01-645-1371 |
| Primary Part Number | EYECUP EXTENDED |
| Item Name | Eyeguard,optical Instrument |
| FSC / FSG | 1240 / 12 — Optical Sighting and Ranging Equipment |
| Manufacturer | Leupold & Stevens Inc |
| Status | ACTIVE |
| Material | RUBBER |
| Attachment Method | PRESS FIT |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| EYECUP EXTENDED PRIMARY | Leupold & Stevens Inc (USA) |
| ES000608 | El Siglo 1870 SL (ESP) |
NSN 1240-01-645-1371 is a Eyeguard,optical Instrument, manufactured by Leupold & Stevens Inc, classified under FSC 1240, Optical Sighting and Ranging Equipment. Status: active.
NSN 1240-01-645-1371 has 2 manufacturer part numbers on file: EYECUP EXTENDED (Leupold & Stevens Inc), ES000608 (El Siglo 1870 SL).
Key specifications for EYECUP EXTENDED: Part Name Assigned by Controlling Agency: EYECUP, EXTENDED; End Item Identification: MARK-4 12-40X60MM OPTICAL SIGHT BORE; Material: RUBBER; Attachment Method: PRESS FIT. 2 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.