The Modification Kit,gun,weapon, cataloged under National Stock Number 1005-01-671-3911, is classified within Federal Supply Class 1005 (Guns, Through 30mm) of the Weapons group. The manufacturer of record is Navy, United States Department of the Dba Naval Surface Warfare Center Div Naval Surface Warfare Center Crane Division. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 1005-01-671-3911 |
| Primary Part Number | 408JXN00879 |
| Item Name | Modification Kit,gun,weapon |
| FSC / FSG | 1005 / 10 — Guns, Through 30mm |
| Manufacturer | Navy, United States Department of the Dba Naval Surface Warfare Center Div Naval Surface Warfare Center Crane Division |
| 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 |
|---|---|
| 14.5 URGI-KIT | Atlantic Diving Supply, Inc. Dba Ads (USA) |
| 408JXN00879 PRIMARY | Navy, United States Department of the Dba Naval Surface Warfare Center Div Naval Surface Warfare Center Crane Division (USA) |
| 28-101-08251 | Daniel Defense, Llc (USA) |
NSN 1005-01-671-3911 is a Modification Kit,gun,weapon, manufactured by Navy, United States Department of the Dba Naval Surface Warfare Center Div Naval Surface Warfare Center Crane Division, classified under FSC 1005, Guns, Through 30mm. Status: active.
NSN 1005-01-671-3911 has 3 manufacturer part numbers on file: 14.5 URGI-KIT (Atlantic Diving Supply, Inc. Dba Ads), 408JXN00879 (Navy, United States Department of the Dba Naval Surface Warfare Center Div Naval Surface Warfare Center Crane Division), 28-101-08251 (Daniel Defense, Llc).
Key specifications for 408JXN00879: Special Features: M4A1 UPPER RECEIVER GROUP KIT,CONVERTS THE UPPER RECEIVER OF A M4A1 TO AN IMPROVED BARREL AND RAIL ASSEMBLY. KIT CONTAINS THE FOLLOWING ITEMS: (1) 1EA, MID-LENGTH GAS SYSTEM 14.5 INCH COLD HAMMER FORGED BARREL, WITH TAPERED PIN GAS BLOCK P/N: 07-077-07308, 1EA. (2) 14.5 MID-LENGTH GAS TUBE, P/N: 04-013-09401, 1 EA; (3) GAS TUBE, PIN SPRING, P/N 15-028-04094,1 EA; (4) CHARGING HANDLE (COYOTE), P/N: 05-664S, 1EA. (5) M-LOK HANDGUARD COYOTE, MARK 16 13.5 INCH, P/N: 05-650S, 1EA. (6) M-LOK ALUMINUM RAIL SECTION, 7 SLOTS-BLACK, P/N: MAG582-BLK, 3EA. (7) M-LOK QD SLING MOUNT BLACK, P/N: MAG606-BLK,1EA. IN; Part Name Assigned by Controlling Agency: KIT, UPPER RECEIVER GROUP-IMPROVED 14.5. 0 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 1005-01-671-3911 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.