PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

11405Sight Unit

Aimpoint Inc Dba Aimpoint Inc · NSN 1240-01-565-3974 · FSC 1240 · No Item Name Available
Verified by PartsTable
NSN 1240-01-565-3974 — this item is cataloged by the U.S. Government under National Stock Number 1240-01-565-3974. Primary manufacturer part number: 11405.
Features
  • Sight Unit — FSC 1240
  • Reticle Style Designator: SPECIAL DESIGN
  • Objective Aperture Diameter: 30.0 MILLIMETERS NOMINAL MM
  • Usage Design: DESIGNED FOR DAY USE,INCLUDING DUSK AND DAWN;SUBMERSIBLE TO 45M (135FT) FT
  • Supplementary Features: MATERIAL LENS COVERS-THERMOPLASTIC ELASTOMER,BLACK,NON-GLARE FINISH
  • Magnification Type: FIXED
  • Scale Markings: PROVIDED
  • Magnification: 1.0X NOMINAL
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Sight Unit, cataloged under National Stock Number 1240-01-565-3974, is classified within Federal Supply Class 1240 (No Item Name Available) of the Fire Control Equipment group. The primary manufacturer of record is Aimpoint Inc Dba Aimpoint Inc. Government technical data includes 16 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. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN1240-01-565-3974
Primary Part Number11405
Item NameSight Unit
FSC / FSG1240 / 12 — No Item Name Available
ManufacturerAimpoint Inc Dba Aimpoint Inc
StatusACTIVE
Reticle Style DesignatorSPECIAL DESIGN
Objective Aperture Diameter30.0 MILLIMETERS NOMINAL MM
Usage DesignDESIGNED FOR DAY USE,INCLUDING DUSK AND DAWN;SUBMERSIBLE TO 45M (135FT) FT
Supplementary FeaturesMATERIAL LENS COVERS-THERMOPLASTIC ELASTOMER,BLACK,NON-GLARE FINISH
Magnification TypeFIXED
Scale MarkingsPROVIDED
Magnification1.0X NOMINAL
Focusing TypeADJUSTABLE
Scale Calibration1CLICK EQUALS 10MM AT 80 METERS EQUALS 13MM AT 100 METERS EQUALS 1/2INCH AT 100 YARDS MM
Straight Type Overall Length130.0 MILLIMETERS NOMINAL MM
Optical Device TypeLENS
Reticle Identifying NumberAIMPOINT COMPML3 4MOA
Field View CoverageMINUTE OF ANGLE (MOA) 4;1 MOA EQUALS 30MM AT 100 METERS EQUALS 1 INCH AT 100 YARDS MM
Special Test FeaturesSELECTED FOR LAW ENFORCEMENT AND MILITARY APPLICATIONS;ALSO USED BY HUNTERS AND SPORT SHOOTERS
Carrying CaseNOT PROVIDED
BracketNOT PROVIDED
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
5133-00-189-9278 INTERCHANGEABLE
Drill,twist
4730-00-215-1133V1099A INTERCHANGEABLE
Strainer Element,sediment
Griswold Industries Dba Cla-Val Co
5950-00-270-1113860821 INTERCHANGEABLE
Transformer,power
Raytheon Company Dba Raytheon
5120-00-900-610911505 INTERCHANGEABLE
Hammer,hand
Vaughan & Bushnell Manufacturing Company
6240-01-063-764811405 INTERCHANGEABLE
Lamp,incandescent
American Optical Co
4940-01-117-9043411405-001 INTERCHANGEABLE
Adapter
Gardner Denver Water Jetting Systems, Inc. Div Engineered Package Group
3695-01-176-4314411405 INTERCHANGEABLE
Underlayment,window
Econoline Mfg Inc
4820-01-323-7321MS-3-100 ITEM 16 INTERCHANGEABLE
Piston,valve
Oil Air Hydraulics Inc.
7025-01-374-960311405 INTERCHANGEABLE
Transport,magnetic Tape
Maynard Electronics Inc
4930-01-561-6352 INTERCHANGEABLE
Filter-Lubricator Assembly,airli
Cross-Reference Index
Part NumberManufacturer
11405 PRIMARY Aimpoint Inc Dba Aimpoint Inc (USA)
Related Parts
5133-00-189-9278INTERCHANGEABLE
DRILL,TWIST
4730-00-215-1133INTERCHANGEABLE
STRAINER ELEMENT,SEDIMENT
V1099A
5950-00-270-1113INTERCHANGEABLE
TRANSFORMER,POWER
860821
5120-00-900-6109INTERCHANGEABLE
HAMMER,HAND
11505
6240-01-063-7648INTERCHANGEABLE
LAMP,INCANDESCENT
11405
4940-01-117-9043INTERCHANGEABLE
ADAPTER
411405-001
3695-01-176-4314INTERCHANGEABLE
UNDERLAYMENT,WINDOW
411405
4820-01-323-7321INTERCHANGEABLE
PISTON,VALVE
MS-3-100 ITEM 16
7025-01-374-9603INTERCHANGEABLE
TRANSPORT,MAGNETIC TAPE
11405
4930-01-561-6352INTERCHANGEABLE
FILTER-LUBRICATOR ASSEMBLY,AIRLI
4730-01-689-0869INTERCHANGEABLE
CLAMP,HOSE
11405
5996-01-692-0529INTERCHANGEABLE
AMPLIFIER,AUDIO FREQUENCY
11405

Frequently Asked Questions

What is NSN 1240-01-565-3974?

NSN 1240-01-565-3974 is a Sight Unit, manufactured by Aimpoint Inc Dba Aimpoint Inc, classified under FSC 1240 (No Item Name Available). Status: active.

What are the part numbers for NSN 1240-01-565-3974?

NSN 1240-01-565-3974 has 1 cross-referenced part number: 11405 (Aimpoint Inc Dba Aimpoint Inc).

What NSN replaces 1240-01-565-3974?

There are 12 known substitutes for 1240-01-565-3974: 5133-00-189-9278, 4730-00-215-1133, 5950-00-270-1113 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 11405?

Key specifications for 11405: Reticle Style Designator: SPECIAL DESIGN; Special Features: ADVANCED CIRCUIT EFFICIENCY TECHNOLOGY (ACET);PASSIVE RED DOT COLLIMATOR REFLEX SIGHT;EYE RELIEF-UNLIMITED;OPTICAL ANTI REFLEX COATING;1 3V LITHIUM BATTERY;MECHANICAL SWITCH DOT BRIGHTNESS-10 SETTINGS-OFF;9 DAYLIGHT OF WHICH ONE IS EXTRA BRIGHT V; Objective Aperture Diameter: 30.0 MILLIMETERS NOMINAL MM; Usage Design: DESIGNED FOR DAY USE,INCLUDING DUSK AND DAWN;SUBMERSIBLE TO 45M (135FT) FT. 19 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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