The Plate,mounting, cataloged under National Stock Number 5340-01-578-9042, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. The manufacturer of record is Barrett Firearms Manufacturing, Inc. Dba Barrett Firearms Manufacturing Inc. Government technical data includes 1 specification, 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5340-01-578-9042 |
| Primary Part Number | 66830-A-KIT |
| Item Name | Plate,mounting |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | Barrett Firearms Manufacturing, Inc. Dba Barrett Firearms Manufacturing Inc |
| Status | ACTIVE |
| Material | ALUMINUM ALLOY |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL B — Remove Demilitarization Key Points |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 66830-A-KIT PRIMARY | Barrett Firearms Manufacturing, Inc. Dba Barrett Firearms Manufacturing Inc (USA) |
NSN 5340-01-578-9042 is a Plate,mounting, manufactured by Barrett Firearms Manufacturing, Inc. Dba Barrett Firearms Manufacturing Inc, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-01-578-9042 has 1 manufacturer part number on file: 66830-A-KIT (Barrett Firearms Manufacturing, Inc. Dba Barrett Firearms Manufacturing Inc).
Key specifications for 66830-A-KIT: Special Features: 30MM ZERO-GAP ULTRA HIGH (1.4 IN) RINGS; 7076-T6 ALUMINUM; WITH RAIL CLAMPING CROSS BOLT AND NUT; BASE TYPE MIL-STD-1913 RAIL MM; Part Name Assigned by Controlling Agency: ZERO GAP RINGS; End Item Identification: TACTICAL RIFLE; Material: ALUMINUM ALLOY. 1 specification is documented in the U.S. Government catalog.
Possible hazard — SDS may be required (DLA HMIC P). Hazard information on this page is shown exactly as it appears in the DLA record.
NSN 5340-01-578-9042 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.