The Reflector,gun Barrel, cataloged under National Stock Number 4933-00-556-4255, is classified within Federal Supply Class 4933 (Weapons Maintenance and Repair Shop Specialized Equipment) of the Maintenance and Repair Shop Equipment group. The manufacturer of record is Army, United States Department of the Dba Rock Island Arsenal Jmtc. Government technical data includes 6 specifications, cited from the U.S. Government catalog. The record lists 4 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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 | 4933-00-556-4255 |
| Primary Part Number | 5564255 |
| Item Name | Reflector,gun Barrel |
| FSC / FSG | 4933 / 49 — Weapons Maintenance and Repair Shop Specialized Equipment |
| Manufacturer | Army, United States Department of the Dba Rock Island Arsenal Jmtc |
| Status | ACTIVE |
| Tube Length | 0.875 INCHES NOMINAL IN |
| Housing Height | 1.375 INCHES NOMINAL IN |
| Style Designator | BLADES |
| Tubing Outside Diameter | 0.791 INCHES MINIMUM AND 0.796 INCHES MAXIMUM IN |
| Size Designator | .50 CAL |
| Material | STEEL HOUSING |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 201090005 | Samsun Yurt Sav.san. Ve Tic.a.s. (TUR) |
| A10266 | Fnh Uk Ltd (GBR) |
| 5564255 PRIMARY | Army, United States Department of the Dba Rock Island Arsenal Jmtc (USA) |
| 3662008856 | Fn Herstal Dba Fabrique Nationale Nouvelle Herstal (BEL) |
| Reference | Meaning |
|---|---|
| 1-62056 | 5/9 Secondary reference Columbus Auto Parts Co |
| 4933005564255 | 6/9 Informative reference only E.c.a Etablissement Central Des Approvisionnements Des Forces Armees Royales |
| 4933PL1951884 | 6/9 Informative reference only Jednolity Indeks Materialowy - Uniform Material Index |
NSN 4933-00-556-4255 is a Reflector,gun Barrel, manufactured by Army, United States Department of the Dba Rock Island Arsenal Jmtc, classified under FSC 4933, Weapons Maintenance and Repair Shop Specialized Equipment. Status: active.
NSN 4933-00-556-4255 has 4 manufacturer part numbers on file: 201090005 (Samsun Yurt Sav.san. Ve Tic.a.s.), A10266 (Fnh Uk Ltd), 5564255 (Army, United States Department of the Dba Rock Island Arsenal Jmtc), 3662008856 (Fn Herstal Dba Fabrique Nationale Nouvelle Herstal).
2 possible matches (shared part number, not a government interchangeability claim): 5310-00-740-6392, 5999-01-158-4379. Verify interchangeability with system specifications before substitution.
Key specifications for 5564255: Tube Length: 0.875 INCHES NOMINAL IN; Housing Height: 1.375 INCHES NOMINAL IN; Style Designator: BLADES; Overall Length: 1.844 INCHES NOMINAL IN. 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 4933-00-556-4255 has DEMIL Code Q. 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.