The Sight,rear, cataloged under National Stock Number 1005-01-601-5578, is classified within Federal Supply Class 1005 (Guns, Through 30mm) of the Weapons group. The manufacturer of record is Charles Reed Knight Jr Dba Knight's Armament Company. Government technical data includes 6 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 1005-01-601-5578 |
| Primary Part Number | 25650 |
| Item Name | Sight,rear |
| FSC / FSG | 1005 / 10 — Guns, Through 30mm |
| Manufacturer | Charles Reed Knight Jr Dba Knight's Armament Company |
| Status | ACTIVE |
| Style Designator | FOLDING |
| Base Width | 44.4 MILLIMETERS NOMINAL MM |
| Height | 49.0 MILLIMETERS NOMINAL MM |
| Surface Treatment | OXIDE |
| Pinhole Diameter | 30.0 MILLIMETERS NOMINAL MM |
| Material | STEEL |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL B — Remove Demilitarization Key Points |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 25650 PRIMARY | Charles Reed Knight Jr Dba Knight's Armament Company (USA) |
NSN 1005-01-601-5578 is a Sight,rear, manufactured by Charles Reed Knight Jr Dba Knight's Armament Company, classified under FSC 1005, Guns, Through 30mm. Status: active.
NSN 1005-01-601-5578 has 1 manufacturer part number on file: 25650 (Charles Reed Knight Jr Dba Knight's Armament Company).
2 possible matches (shared part number, not a government interchangeability claim): 5305-01-606-6996, 4730-01-627-5131. Verify interchangeability with system specifications before substitution.
Key specifications for 25650: Style Designator: FOLDING; Base Width: 44.4 MILLIMETERS NOMINAL MM; Height: 49.0 MILLIMETERS NOMINAL MM; Special Features: REMOVEABLE FOLDING REAR SIGHT ASSEMBLY. 6 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.
NSN 1005-01-601-5578 has DEMIL Code B. Demilitarization may be required before disposal or transfer to non-military entities.
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.