PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

43-OBJCap,lens

Barrett Firearms Manufacturing, Inc. Dba Barrett Firearms Manufacturing Inc · NSN 6650-01-545-5208 · FSC 6650 · No Item Name Available
Verified by PartsTable
NSN 6650-01-545-5208 — this item is cataloged by the U.S. Government under National Stock Number 6650-01-545-5208. Primary manufacturer part number: 43-OBJ.
Features
  • Cap,lens — FSC 6650
  • Material: PLASTIC
  • Diameter: 2.310 INCHES NOMINAL IN
  • 1 verified cross-reference
  • Primary manufacturer: Barrett Firearms Manufacturing, Inc. Dba Barrett Firearms Manufacturing Inc
Applications
  • Applications requiring Plastic construction
General Description

The Cap,lens, cataloged under National Stock Number 6650-01-545-5208, is classified within Federal Supply Class 6650 (No Item Name Available) of the Instruments and Laboratory Equipment group. The primary manufacturer of record is Barrett Firearms Manufacturing, Inc. Dba Barrett Firearms Manufacturing Inc. Government technical data includes 2 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference 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.

Technical Specifications
ParameterValue
NSN6650-01-545-5208
Primary Part Number43-OBJ
Item NameCap,lens
FSC / FSG6650 / 66 — No Item Name Available
ManufacturerBarrett Firearms Manufacturing, Inc. Dba Barrett Firearms Manufacturing Inc
StatusACTIVE
MaterialPLASTIC
Diameter2.310 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 2
6650-01-502-187134344 INTERCHANGEABLE
Lens,optical Instrument,mounted
Butler Creek
5340-01-657-480243 OBJ INTERCHANGEABLE
Cap-Plug,protective,dust and Moi
Butler Creek
Cross-Reference Index
Part NumberManufacturer
43-OBJ PRIMARY Barrett Firearms Manufacturing, Inc. Dba Barrett Firearms Manufacturing Inc (USA)
Related Parts
6650-01-502-1871INTERCHANGEABLE
LENS,OPTICAL INSTRUMENT,MOUNTED
34344
5340-01-657-4802INTERCHANGEABLE
CAP-PLUG,PROTECTIVE,DUST AND MOI
43 OBJ

Frequently Asked Questions

What is NSN 6650-01-545-5208?

NSN 6650-01-545-5208 is a Cap,lens, manufactured by Barrett Firearms Manufacturing, Inc. Dba Barrett Firearms Manufacturing Inc, classified under FSC 6650 (No Item Name Available). Status: active.

What are the part numbers for NSN 6650-01-545-5208?

NSN 6650-01-545-5208 has 1 cross-referenced part number: 43-OBJ (Barrett Firearms Manufacturing, Inc. Dba Barrett Firearms Manufacturing Inc).

What NSN replaces 6650-01-545-5208?

There are 2 known substitutes for 6650-01-545-5208: 6650-01-502-1871, 5340-01-657-4802. Verify interchangeability with system specifications before substitution.

What are the specifications of 43-OBJ?

Key specifications for 43-OBJ: Material: PLASTIC; End Item Identification: USED ON BARRETT M95-SP .50 CALIBER RIFLE; Special Features: OBJECTIVE LENS COVER, BLACK, SPRING LOADED; I/D 2.310 IN IN; Diameter: 2.310 INCHES NOMINAL IN. 4 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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