The Filter,polarizing, cataloged under National Stock Number 1240-01-522-1041, is classified within Federal Supply Class 1240 (Optical Sighting and Ranging Equipment) of the Fire Control Equipment group. The manufacturer of record is Trijicon, Inc. Dba Trijicon Inc. Government technical data includes 1 specification, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 1240-01-522-1041 |
| Primary Part Number | RX20 |
| Item Name | Filter,polarizing |
| FSC / FSG | 1240 / 12 — Optical Sighting and Ranging Equipment |
| Manufacturer | Trijicon, Inc. Dba Trijicon Inc |
| Status | ACTIVE |
| General Characteristics Item Description | POLARIZING FILTER FOR REFLEX SIGHTS, FITS SUNSHADED MODELS |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| RX20 PRIMARY | Trijicon, Inc. Dba Trijicon Inc (USA) |
NSN 1240-01-522-1041 is a Filter,polarizing, manufactured by Trijicon, Inc. Dba Trijicon Inc, classified under FSC 1240, Optical Sighting and Ranging Equipment. Status: active.
NSN 1240-01-522-1041 has 1 manufacturer part number on file: RX20 (Trijicon, Inc. Dba Trijicon Inc).
1 possible match (shared part number, not a government interchangeability claim): 5306-01-579-0531. Verify interchangeability with system specifications before substitution.
Key specifications for RX20: General Characteristics Item Description: POLARIZING FILTER FOR REFLEX SIGHTS, FITS SUNSHADED MODELS. 1 specification is documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.