Independent field journal · Practice, evidence, judgmentIssue No. 01 / Summer 2026
KGKNOWN GROUNDClarity and capability in a contested world
Newsletter
Product record · Specifications checked July 23, 2026

407C X3

Current-generation open pistol sight with an RMR footprint.

Editorial status

current

Research record; not firsthand tested.

Key facts

optic

Weight: 1.55 oz
Dimensions: 1.78 × 1.32 × 1.10 in
Compatibility: Trijicon RMR footprint

Typical price

Not listed

Prices may change.

No merchant links are currently listed.

Description

Current-generation open pistol sight with an RMR footprint.

Specifications

Documented specifications for 407C X3
SolarYes
DesignOpen emitter
Window0.91 × 0.67 in
BatterySide-loading CR1632
Housing7075-T6 aluminum
Reticle2 MOA red dot
Adjustment1 MOA per click
Brightness8 daylight and 4 night-vision settings
Battery life50,000 hours at setting 6
Magnification
Adjustment range±50 MOA
Water resistanceIP67
Motion activationShake Awake
Automatic brightnessYes

Sources and verification

Reviewed pistol mounting paths

Published compatibility records for 407C X3
Pistol configurationResultMounting detailsVerified
Glock G19 Gen6 Optic Ready
G19 Gen6 Optic Ready · Glock Gen6 Optic Ready
plate requiredGlock Glock Gen6 02 Plate (oem) — Use OEM screws.Checked July 16, 2026
Not personally tested
Glock G17 Gen5 MOS
G17 Gen5 MOS · Glock Gen5 MOS
plate requiredGlock Glock MOS 02 Plate (oem) — Follow the current Glock MOS and Holosun instructions.Checked July 16, 2026
Not personally tested
Glock G19 Gen5 MOS
G19 Gen5 MOS · Glock Gen5 MOS
plate requiredGlock Glock MOS 02 Plate (oem) — Follow the current Glock MOS and Holosun instructions.Checked July 16, 2026
Not personally tested
Glock G45 Gen6 Optic Ready
G45 Gen6 Optic Ready · Glock Gen6 Optic Ready
plate requiredGlock Glock Gen6 02 Plate (oem) — Use OEM screws.Checked July 16, 2026
Not personally tested
Glock G17 Gen6 Optic Ready
G17 Gen6 Optic Ready · Glock Gen6 Optic Ready
plate requiredGlock Glock Gen6 02 Plate (oem) — Use OEM screws.Checked July 16, 2026
Not personally tested
Glock G47 MOS
G47 MOS · Glock Gen5 MOS
plate requiredGlock Glock MOS 02 Plate (oem) — Follow the current Glock MOS and Holosun instructions.Checked July 16, 2026
Not personally tested
Glock G45 MOS
G45 MOS · Glock Gen5 MOS
plate requiredGlock Glock MOS 02 Plate (oem) — Follow the current Glock MOS and Holosun instructions.Checked July 16, 2026
Not personally tested

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