Support Equipment

MT-12 sighting suite

The MT-12 sighting suite groups the source-listed optical and artillery sights installed on the Rapira anti-tank gun: the OP4MU-40U direct-fire day sight, the S71-40 mechanical sight with PG-1M panoramic sight and K-1 collimator for covered-position fire, and the APN-6-40 / 1PN35 night sight.

MT-12 sighting suite, Day, indirect-fire, and night sighting equipment set for the MT-12 anti-tank gun, Support Equipment

Image source: MT-12 Ukrainian service image

Host Weapon

Belspetsvneshtechnika identifies these sights as installed on the MT-12 gun for direct, covered-position, and night firing.

Compatible item

Item type

Compatibility evidence

MT-12 Rapira, Towed 100 mm smoothbore anti-tank gun, Artillery

100 mm smoothbore anti-tank gun

The source lists OP4MU-40U for daytime direct fire, S71-40 with PG-1M and K-1 for covered-position fire, and APN-6-40 / 1PN35 for night firing on the MT-12.

Sources: 100 mm anti-tank gun MT-12 Rapira

Profile

Origin: Soviet Union / post-Soviet service stocks
Built by: Sovietpost-Soviet optical and artillery-instrument industry
Built in: Soviet Unionpost-Soviet states
Type: Day, indirect-fire, and night sighting equipment set for the MT-12 anti-tank gun
Service note: Cold War artillery sighting equipment retained with MT-12 service

artillery sightopticsfire controlnight sightsupport equipment

Specifications

Direct-fire day sight: OP4MU-40U optical sight
Covered-position sight: S71-40 mechanical sight
Panoramic sight: PG-1M
Collimator: K-1
Night sight: APN-6-40 / 1PN35
Host weapon: MT-12 100 mm anti-tank gun

Service And Conflict Use

Service History

In service: Listed by Belspetsvneshtechnika as artillery sights installed on the MT-12 gun.

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Sources

100 mm anti-tank gun MT-12 RapiraPublisher: Belspetsvneshtechnika | Note: Supports the MT-12 sighting equipment list: OP4MU-40U optical sight for daytime direct fire, S71-40 with PG-1M and K-1 for covered-position fire, and APN-6-40 / 1PN35 night sight. | Accessed: 2026-06-24 MT-12 optics and ammunition overviewPublisher: Wikipedia | Note: Supports the general MT-12 optics context, including day direct-fire, night, and indirect-fire sighting equipment. | Accessed: 2026-06-24 MT-12 Ukrainian service imagePublisher: Wikimedia Commons | Note: Image provenance and licensing page for the MT-12 photograph used to represent the sighting suite's host weapon. | Accessed: 2026-06-24