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

407K X2

Compact open pistol sight using the Holosun K footprint.

Editorial status

current

Research record; not firsthand tested.

Key facts

optic

Weight: 1.0 oz
Dimensions: 1.60 × 0.98 × 0.95 in
Compatibility: Holosun K footprint

Typical price

Not listed

Prices may change.

No merchant links are currently listed.

Description

Compact open pistol sight using the Holosun K footprint.

Specifications

Documented specifications for 407K X2
DesignOpen emitter
Window0.58 × 0.77 in
BatterySide-loading CR1632
Housing7075-T6 aluminum
Reticle6 MOA red dot
Adjustment1 MOA per click
Brightness10 daylight and 2 night-vision settings
Battery life50,000 hours at setting 6
Magnification
Adjustment range±30 MOA
Water resistanceIP67
Motion activationShake Awake

Sources and verification

Reviewed pistol mounting paths

No reviewed mounting paths are published for this product yet. Missing evidence remains unverified rather than being inferred from a reported footprint.

Continue researching