PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

21318Handguard Freefloat

Charles Reed Knight Jr Dba Knight's Armament Company · NSN 1005-01-562-0913 · FSC 1005 · No Item Name Available
Verified by PartsTable
NSN 1005-01-562-0913 — this item is cataloged by the U.S. Government under National Stock Number 1005-01-562-0913. Primary manufacturer part number: 21318.
Features
  • Handguard Freefloat — 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 Freefloat, cataloged under National Stock Number 1005-01-562-0913, 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. 10 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN1005-01-562-0913
Primary Part Number21318
Item NameHandguard Freefloat
FSC / FSG1005 / 10 — No Item Name Available
ManufacturerCharles Reed Knight Jr Dba Knight's Armament Company
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 10
3520-00-390-0194 INTERCHANGEABLE
Cutter,trimmer
9540-00-596-3010 INTERCHANGEABLE
Angle,structural
4030-01-098-700821318 INTERCHANGEABLE
Wire Clamp
Smiths Aerospace, Inc., Electronic Systems-Grand Rapids
3120-01-190-414221318 INTERCHANGEABLE
Bushing,sleeve
Moog Inc. Dba Ampac-Isp Corp
4320-01-324-371421318 INTERCHANGEABLE
Balance Ring and Pin
Eaton Corporation Div Eaton Fluid Power
4320-01-336-180021318 INTERCHANGEABLE
Pump,centrifugal
Industrial Technologies and Services Llc
7045-01-406-405198310 INTERCHANGEABLE
Cd-Rom Storage Case
Abm Federal Sales, Inc. Dba Abm Federal
7490-01-459-826435250 INTERCHANGEABLE
Oil,shredding Machine
Fellowes Inc
5340-01-522-734962-40-211-2 INTERCHANGEABLE
Latch,rim
Southco Inc
5310-01-678-107021318 INTERCHANGEABLE
Washer,flat
Stanley Black & Decker, Inc. Dba Stanley Hydraulic Tools Div Stanley Hydraulic Tools
Cross-Reference Index
Part NumberManufacturer
21318 PRIMARY Charles Reed Knight Jr Dba Knight's Armament Company (USA)
Related Parts
3520-00-390-0194INTERCHANGEABLE
CUTTER,TRIMMER
9540-00-596-3010INTERCHANGEABLE
ANGLE,STRUCTURAL
4030-01-098-7008INTERCHANGEABLE
WIRE CLAMP
21318
3120-01-190-4142INTERCHANGEABLE
BUSHING,SLEEVE
21318
4320-01-324-3714INTERCHANGEABLE
BALANCE RING AND PIN
21318
4320-01-336-1800INTERCHANGEABLE
PUMP,CENTRIFUGAL
21318
7045-01-406-4051INTERCHANGEABLE
CD-ROM STORAGE CASE
98310
7490-01-459-8264INTERCHANGEABLE
OIL,SHREDDING MACHINE
35250
5340-01-522-7349INTERCHANGEABLE
LATCH,RIM
62-40-211-2
5310-01-678-1070INTERCHANGEABLE
WASHER,FLAT
21318

Frequently Asked Questions

What is NSN 1005-01-562-0913?

NSN 1005-01-562-0913 is a Handguard Freefloat, 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 1005-01-562-0913?

NSN 1005-01-562-0913 has 1 cross-referenced part number: 21318 (Charles Reed Knight Jr Dba Knight's Armament Company).

What NSN replaces 1005-01-562-0913?

There are 10 known substitutes for 1005-01-562-0913: 3520-00-390-0194, 9540-00-596-3010, 4030-01-098-7008 and 7 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 21318?

Key specifications for 21318: End Item Identification: M12 MOD 1. 1 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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