The Gunner Collimator K-1 is an artillery laying accessory used as an artificial aiming reference when normal aiming points are absent, obscured, or unlit. Current product literature ties it to PG-1M and MUM sights, Belspetsvneshtechnika lists it in the MT-12 covered-position sighting arrangement, and Defense Express identified a K-1 in Ukrainian 47th Artillery Brigade photos of a 2S22 Bohdana during the 2014 Russia-Ukraine War.
Ukrainian 47th Artillery Brigade photos of a 2S22 Bohdana included a separate device that Defense Express identified as a Gunner Collimator K-1, placing the collimator in Ukrainian artillery use during the full-scale phase of the war.
Role detailsThe K-1 appears in product literature as a collimator for PG-1M and MUM sight users, while artillery-system references place it in specific Soviet-pattern and Ukrainian artillery sighting chains.
| Compatible item | Item type | Compatibility evidence |
|---|---|---|
 | associated panoramic sight | Opticoelectron states that the K-1 can be used together with PG-1M and MUM sights. Sources: Opticoelectron K-1 catalogue |
 | covered-position collimator component | Belspetsvneshtechnika lists the K-1 with the S71-40 mechanical sight and PG-1M panoramic sight for MT-12 covered-position fire. Sources: Belspetsvneshtechnika MT-12 Rapira |
 | 203 mm self-propelled gun sighting fit | Army Recognition describes the 2S7 gun operator using a PG-1M panoramic day telescope together with a K-1 collimator. Sources: Army Recognition 2S7 Pion |
 | Ukrainian self-propelled howitzer photo context | Defense Express identified a separate device in Ukrainian 47th Artillery Brigade Bohdana photos as a Gunner Collimator K-1. Sources: Defense Express Bohdana K-1 photo |
The K-1 is a support instrument rather than a weapon that fires a munition. Its value is in giving the gun crew a stable artificial aiming reference for horizontal laying when natural reference points are missing, hidden by smoke, snow, rain, or darkness, or otherwise unsuitable.
Product literature links the K-1 to PG-1M and MUM sights; MT-12 references place it with the S71-40 mechanical sight and PG-1M panoramic sight for covered-position fire.
The recurring listed feature is illumination for use at dusk, night, or in poor-visibility firing positions.
Sources identify K-1 use or association with MT-12, 2S7 Pion, and a Ukrainian 2S22 Bohdana photo set.
Defense Express identified a Gunner Collimator K-1 among 47th Artillery Brigade photos showing details of a 2S22 Bohdana howitzer.
Sources: Defense Express Bohdana K-1 photo
Opticoelectron, Arcon Consult, Arcon Partners, Bulcomers KS, and Azersilah product pages or catalogues continue to list K-1/K1 collimator configurations for artillery or mortar sighting use.
Sources: Opticoelectron K-1 catalogue, Arcon Consult K-1, Arcon Partners K-1, Bulcomers KS K-1, Azersilah K1 gun collimator
