PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

R115Plunger,extractor

M-B Companies, Inc. · NSN 1005-00-731-1911 · FSC 1005 · No Item Name Available
Verified by PartsTable
NSN 1005-00-731-1911 — this item is cataloged by the U.S. Government under National Stock Number 1005-00-731-1911. Primary manufacturer part number: R115.
Features
  • Plunger,extractor — FSC 1005
  • Reference Number Differentiating Characteristics: USED ON RIFLE CAL 22 MODEL 44 AND MODEL 42 MB MB
  • 2 verified cross-references
  • Primary manufacturer: M-B Companies, Inc.
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Plunger,extractor, cataloged under National Stock Number 1005-00-731-1911, is classified within Federal Supply Class 1005 (No Item Name Available) of the Weapons group. The primary manufacturer of record is M-B Companies, Inc.. Government technical data includes 1 verified specification, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN1005-00-731-1911
Primary Part NumberR115
Item NamePlunger,extractor
FSC / FSG1005 / 10 — No Item Name Available
ManufacturerM-B Companies, Inc.
StatusACTIVE
Reference Number Differentiating CharacteristicsUSED ON RIFLE CAL 22 MODEL 44 AND MODEL 42 MB MB
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 2
3110-00-155-7336177030-49 INTERCHANGEABLE
Bearing,roller,cylindrical
Navistar Intl Corp Melrose Park Engine Plant Location /melrose Park/
6210-00-829-6494R115 INTERCHANGEABLE
Light,indicator,enc
Chicago Miniature Lighting Llc Dba Chicago Miniature Optoelectron
Cross-Reference Index
Part NumberManufacturer
R115 M-B Companies, Inc. (USA)
R115 O F Mossberg & Sons Inc (USA)
Related Parts
3110-00-155-7336INTERCHANGEABLE
BEARING,ROLLER,CYLINDRICAL
177030-49
6210-00-829-6494INTERCHANGEABLE
LIGHT,INDICATOR,ENC
R115

Frequently Asked Questions

What is NSN 1005-00-731-1911?

NSN 1005-00-731-1911 is a Plunger,extractor, manufactured by M-B Companies, Inc., classified under FSC 1005 (No Item Name Available). Status: active.

What are the part numbers for NSN 1005-00-731-1911?

NSN 1005-00-731-1911 has 2 cross-referenced part numbers: R115 (M-B Companies, Inc.), R115 (O F Mossberg & Sons Inc).

What NSN replaces 1005-00-731-1911?

There are 2 known substitutes for 1005-00-731-1911: 3110-00-155-7336, 6210-00-829-6494. Verify interchangeability with system specifications before substitution.

What are the specifications of R115?

Key specifications for R115: Reference Number Differentiating Characteristics: USED ON RIFLE CAL 22 MODEL 44 AND MODEL 42 MB MB. 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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