PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

25958Handguard Upper

Charles Reed Knight Jr Dba Knight's Armament Company · NSN 1005-01-601-5600 · FSC 1005 · No Item Name Available
Verified by PartsTable
NSN 1005-01-601-5600 — this item is cataloged by the U.S. Government under National Stock Number 1005-01-601-5600. Primary manufacturer part number: 25958.
Features
  • Handguard Upper — FSC 1005
  • 1 verified cross-reference
  • Primary manufacturer: Charles Reed Knight Jr Dba Knight's Armament Company
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Handguard Upper, cataloged under National Stock Number 1005-01-601-5600, is classified within Federal Supply Class 1005 (No Item Name Available) of the Weapons group. The primary manufacturer of record is Charles Reed Knight Jr Dba Knight's Armament Company. This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 7 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN1005-01-601-5600
Primary Part Number25958
Item NameHandguard Upper
FSC / FSG1005 / 10 — No Item Name Available
ManufacturerCharles Reed Knight Jr Dba Knight's Armament Company
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 7
5330-00-292-1432 INTERCHANGEABLE
Gasket
3110-00-606-1840LM67010 INTERCHANGEABLE
Cup,tapered Roller Bearing
The Timken Corporation
4820-01-293-506325958 INTERCHANGEABLE
Valve,globe
Clayton Manufacturing Company
6680-01-369-0603 INTERCHANGEABLE
Glass,liquid Sight Indicator,fla
6515-01-473-0986259.58 INTERCHANGEABLE
Bolt Locking
Depuy Synthes Sales Inc Dba Depuy Synthes Trauma Div Depuy Synthes Sales, Inc., D/b/a Depuy Synthes Trauma
1560-01-714-51282-5958-6 INTERCHANGEABLE
Web,structural Component,aircraf
The Boeing Company Div Defense
1560-01-717-11762-5958-5 INTERCHANGEABLE
Web,structural Component,aircraf
The Boeing Company Div Defense
Cross-Reference Index
Part NumberManufacturer
25958 PRIMARY Charles Reed Knight Jr Dba Knight's Armament Company (USA)
Related Parts
5330-00-292-1432INTERCHANGEABLE
GASKET
3110-00-606-1840INTERCHANGEABLE
CUP,TAPERED ROLLER BEARING
LM67010
4820-01-293-5063INTERCHANGEABLE
VALVE,GLOBE
25958
6680-01-369-0603INTERCHANGEABLE
GLASS,LIQUID SIGHT INDICATOR,FLA
6515-01-473-0986INTERCHANGEABLE
BOLT LOCKING
259.58
1560-01-714-5128INTERCHANGEABLE
WEB,STRUCTURAL COMPONENT,AIRCRAF
2-5958-6
1560-01-717-1176INTERCHANGEABLE
WEB,STRUCTURAL COMPONENT,AIRCRAF
2-5958-5

Frequently Asked Questions

What is NSN 1005-01-601-5600?

NSN 1005-01-601-5600 is a Handguard Upper, manufactured by Charles Reed Knight Jr Dba Knight's Armament Company, classified under FSC 1005 (No Item Name Available). Status: active.

What are the part numbers for NSN 1005-01-601-5600?

NSN 1005-01-601-5600 has 1 cross-referenced part number: 25958 (Charles Reed Knight Jr Dba Knight's Armament Company).

What NSN replaces 1005-01-601-5600?

There are 7 known substitutes for 1005-01-601-5600: 5330-00-292-1432, 3110-00-606-1840, 4820-01-293-5063 and 4 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 25958?

Key specifications for 25958: Part Name Assigned by Controlling Agency: 7.62 URX RAIL ASSY WITH TOP RAIL EXTENSION; End Item Identification: 7.62 X 51 MM SEMI-AUTOMATIC SNIPER RIFLE M110 MM; Overall Length: 339.4 MILLIMETERS NOMINAL MM; Special Features: RAIL ATTACHMENT SYSTEM. 6 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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