The Tube,barrel Extension, cataloged under National Stock Number 1005-01-015-0420, is classified within Federal Supply Class 1005 (Guns, Through 30mm) of the Weapons group. The manufacturer of record is General Dynamics - Ots, Inc.. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Item Name | Tube,barrel Extension |
| FSC / FSG | 1005 — Guns, Through 30mm (FSG 10) |
| Manufacturers | General Dynamics - Ots, Inc. (CAGE 26978) |
| Parameter | Value |
|---|---|
| NSN | 1005-01-015-0420 |
| Primary Part Number | MB3172 |
| Item Name | Tube,barrel Extension |
| FSC / FSG | 1005 / 10 — Guns, Through 30mm |
| Manufacturer | General Dynamics - Ots, Inc. |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL D — Destroy Item |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| MB3172 PRIMARY | General Dynamics - Ots, Inc. (USA) |
| Reference | Meaning |
|---|---|
| MC0970 | 5/9 Secondary reference General Dynamics - Ots, Inc. |
| MC3118 | 5/9 Secondary reference General Dynamics - Ots, Inc. |
NSN 1005-01-015-0420 is a Tube,barrel Extension, manufactured by General Dynamics - Ots, Inc., classified under FSC 1005, Guns, Through 30mm. Status: active.
NSN 1005-01-015-0420 has 1 manufacturer part number on file: MB3172 (General Dynamics - Ots, Inc.).
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 1005-01-015-0420 has DEMIL Code D. 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.