PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

99949Buffer and Breech

Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier · NSN 1030-00-603-2661 · FSC 1030 · No Item Name Available
Verified by PartsTable
NSN 1030-00-603-2661 — this item is cataloged by the U.S. Government under National Stock Number 1030-00-603-2661. Primary manufacturer part number: 99949.
Features
  • Buffer and Breech — FSC 1030
  • 2 verified cross-references
  • Primary manufacturer: Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Buffer and Breech, cataloged under National Stock Number 1030-00-603-2661, is classified within Federal Supply Class 1030 (No Item Name Available) of the Weapons group. The primary manufacturer of record is Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier. This item has 2 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Catalog Facts
Item NameBuffer and Breech
FSC / FSG1030 — No Item Name Available (FSG 10)
ManufacturersNavair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (CAGE 10001)
Technical Specifications
ParameterValue
NSN1030-00-603-2661
Primary Part Number99949
Item NameBuffer and Breech
FSC / FSG1030 / 10 — No Item Name Available
ManufacturerNavair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 2
2805-00-423-328169923 INTERCHANGEABLE
Piston,internal Combustion Engin
Briggs and Stratton Corp
5330-01-035-4923W-1526 INTERCHANGEABLE
Gasket
Trelleborg Sealing Solutions Us, Inc.
Cross-Reference Index
Part NumberManufacturer
99949 PRIMARY Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA)
LD262326ITEM4 PRIMARY Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA)
Related Parts
2805-00-423-3281INTERCHANGEABLE
PISTON,INTERNAL COMBUSTION ENGIN
69923
5330-01-035-4923INTERCHANGEABLE
GASKET
W-1526

Frequently Asked Questions

What is NSN 1030-00-603-2661?

NSN 1030-00-603-2661 is a Buffer and Breech, manufactured by Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier, classified under FSC 1030 (No Item Name Available). Status: active.

What are the part numbers for NSN 1030-00-603-2661?

NSN 1030-00-603-2661 has 2 cross-referenced part numbers: 99949 (Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier), LD262326ITEM4 (Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier).

What NSN replaces 1030-00-603-2661?

There are 2 known substitutes for 1030-00-603-2661: 2805-00-423-3281, 5330-01-035-4923. Verify interchangeability with system specifications before substitution.

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