Historical overview
The 2S25 Sprut-SD is a Russian airborne amphibious tracked direct-fire vehicle built around a 125 mm smoothbore gun. It is best understood as an anti-armor and direct-fire support system for formations that cannot normally deploy a full-weight main battle tank: airborne troops, amphibious landing forces, marines, and other light mechanized formations. Sources
The family mattered because it pursued the hardest version of the light-tank problem: MBT-caliber firepower in a platform light enough to swim and deploy with airborne forces. Rostec states that the Sprut-SDM1 uses a 125 mm 2A75 cannon and that its firepower corresponds to a T-90MS, while the same official release gives a crew of three, an 18-ton combat weight, and speeds of up to 70 km/h on land and 10 km/h on water. The tradeoff is stark: the firepower is tank-class; the protection is not. [Rostec 2021] Sources
Historically, the vehicle sits at the end of a Soviet/Russian line of amphibious light-tank and airborne-combat-vehicle thinking. The PT-76 gave the Soviet Union a swimming light tank; the BMD series gave the airborne troops compact, air-droppable tracked vehicles; Sprut attempted to combine airborne mobility and amphibious operation with a 125 mm gun capable of using tank ammunition and gun-launched missiles. [ODIN 2024; GlobalSecurity 2024; Army Guide 2026] Sources
The major variants are the original 2S25 Sprut-SD and the modernized 2S25M Sprut-SDM1. Published accounts describe the former as the 2005+ production/light-tank-tank-destroyer variant and the latter as a 2010s-2020s modernization/new-production variant with improved fire control, mobility, and sensors. Open sources also mention prototype and pre-production Sprut-SDM1 vehicles; those remain separate in the available accounts because classification and service status differ by source. [RIA 2023] Sources
The central controversies are classification, quantity, and current status. Sources use light tank, self-propelled anti-tank gun, tank destroyer, and direct-fire support vehicle. Production totals are usually reported only as limited, with contemporary open inventory references pointing to a small fleet. Sprut-SDM1 completed or was reported to have completed state testing and became ready for serial production, but publicly verifiable post-2023 delivery quantities remain unclear. [RIA 2023; IISS 2025] Sources
Sprut is a highly specialized weapon rather than a general-purpose tank. It makes sense as a mobile direct-fire and anti-armor vehicle for airborne or amphibious troops, especially where bridges, terrain, or airlift limit heavy armor. It does not demonstrate an MBT substitute. Its light armor, small fleet size, and uncertain modernized production status make it more doctrinally interesting than numerically decisive. [Rostec 2021; TASS 2021; ODIN 2024] Sources
The requirement behind Sprut was rooted in the peculiar needs of Soviet and Russian airborne doctrine. Airborne forces prize rapid deployment, swimming capability, and tactical mobility; main battle tanks offer the firepower and protection needed against enemy armor but usually exceed air-droppable, amphibious, or assault-landing constraints. The result was a recurring search for vehicles that could accompany airborne troops without becoming ordinary heavy armor. [ODIN 2024; TASS 2021] Sources
The PT-76 had already shown the value and limitation of amphibious light tanks. It could swim and scout, but its 76 mm gun and light armor belonged to an earlier era. The BMD line then gave Soviet and Russian airborne troops a distinct family of compact tracked vehicles, but even gun/missile-armed BMDs did not provide a tank-class direct-fire gun. Sprut was the answer to that gap: a vehicle that could land, swim, and shoot like a tank, but not survive like one. [GlobalSecurity 2024; Army Guide 2026] Sources
Industrially, the program overlapped the contraction and reorganization of Russia’s post-Soviet defense sector. Volgograd Tractor Plant, Kurganmashzavod, High Precision Systems, and related gun/fire-control organizations appear across the open-source trail. Modern Sprut-SDM1 material also stresses unification with the BMD-4M lineage, reflecting Russia’s need to simplify a small specialized fleet by tying it to active airborne-vehicle production. [Rostec 2021; RIA 2023] Sources
Politically and doctrinally, Sprut illustrates the Russian habit of preserving niche weapons for airborne and naval-infantry missions even when their general-war utility is debated. It offers a way to give light forces tank ammunition, gun-launched missile capability, and direct fire against bunkers and armor, but its design assumes tactical employment that avoids prolonged exposure to heavy anti-armor fire. [TASS 2021; ODIN 2024] Sources
Development and variants
The tracked 2S25 family includes Sprut-SD and the later Sprut-SDM1 development and export proposals. The towed Sprut-A and Sprut-B guns share a name but are not variants of the tracked vehicle. [Rosoboronexport 2025] Sources
Excluded: the towed Sprut-A/Sprut-B anti-tank guns; general BMD-3/BMD-4M histories except as chassis lineage; and Russian main battle tanks except where their ammunition, fire-control, or comparative role is relevant. [Rostec 2021; RIA 2023; TASS 2021] Sources
Related vehicles often confused with it include the BMD-3 and BMD-4M airborne infantry fighting vehicles, the PT-76 amphibious light tank, Russia’s T-72/T-80/T-90 main battle tanks, and Western or Asian light-tank/direct-fire support vehicles such as the M10 Booker, CV90120, Type 15, Centauro, and Type 16. The difference is that Sprut combines a 125 mm tank gun and amphibious/airborne traits in a very lightly protected tracked hull. [ODIN 2024] Sources
Open sources usually trace Sprut-SD to late-Soviet work on an airborne self-propelled anti-tank gun, followed by post-Soviet development and limited serial production. Several secondary sources place technical requirements and prototype development years earlier, but those early dates are not consistently documented in official English-language material. [GlobalSecurity 2024] Sources
The baseline 2S25 Sprut-SD is tied to a BMD-derived airborne chassis and a 125 mm 2A75 gun. Its design choice was not subtle: all available mass was spent on the gun, suspension, amphibious capacity, air-transport constraints, and enough light armor to protect against small-arms and splinter threats, not against tank guns or modern anti-tank missiles. [Army Guide 2026; GlobalSecurity 2024] Sources
The modernized 2S25M Sprut-SDM1 became public in the mid-2010s. It is commonly described as a modernization with improved sights, digital fire control, communications/team-control equipment, and BMD-4M-related mobility components. Rostec’s 2021 release stated that the Sprut-SDM1 was created by the High-Precision Weapons holding of Rostec, was undergoing maritime state trials, and was built at Kurganmashzavod. [Rostec 2021; TASS 2021] Sources
Testing milestones are unusually visible because Russian officials promoted Sprut-SDM1 for both domestic airborne troops and export prospects. Rostec reported in July 2021 that the vehicle had passed a first stage of state trials in maritime conditions in the Black Sea and would test firing while afloat. It said the full state-trial cycle was scheduled to complete in early 2022 and that the O1 documentation label would permit serial production and recommendation for Russian adoption. [Rostec 2021] Sources
RIA Novosti reported in August 2023, citing Rostec’s High Precision Systems, that state trials of the 125 mm 2S25M self-propelled anti-tank gun were complete and that the vehicle was ready for serial production once included in the state defense order. The same report connected 2S25M to the older 2S25 Sprut-SD and to unification with BMD-4M chassis units and assemblies. [RIA 2023] Sources
Procurement and redesign history remains incomplete in open sources. The base 2S25 fleet is consistently described as limited. The modernized Sprut-SDM1 has repeatedly been announced, tested, offered for export, and described as ready for serial production, but verifiable delivery counts are difficult to establish. Sources
Design and performance
Sprut follows a compact tracked armored-vehicle layout: driver/crew positions forward, a central turret and fighting compartment, and a rear powerpack. The 2S25’s BMD-derived chassis is longer than the BMD-3 and uses seven road wheels per side in commonly published descriptions; this allows the chassis to absorb gun recoil and distribute the mass of the large turret and ammunition system. [Army Guide 2026; GlobalSecurity 2024] Sources
The hull is a lightweight airborne/amphibious structure, generally described in secondary sources as aluminum armor with additional steel or composite elements. Its shape emphasizes buoyancy, low mass, and amphibious trim. The front glacis and side skirts on display vehicles show the practical compromise: enough volume and shape to swim, but no heavy modular armor arrays. [GlobalSecurity 2024] Sources
The turret carries the 125 mm smoothbore gun, autoloading ammunition system, smoke dischargers, optics, and command/gunner stations. The Sprut-SDM1 adds a visible remote weapon station on public display examples and is advertised with improved sensors and fire-control equipment. [Rostec 2021; Rosoboronexport 2025] Sources
Protection is the weakest element of the design. Open sources generally credit the vehicle with protection against small arms, fragments, and limited autocannon threats over the frontal arc, but exact armor composition and resistance are not reliably public. It is described as a lightly armored direct-fire vehicle, not a tank protected against tank guns, modern ATGMs, top-attack munitions, or sustained artillery/drone attack. [GlobalSecurity 2024; ODIN 2024] Sources
The base 2S25 uses the 125 mm 2A75 smoothbore gun; the modernized 2S25M is commonly associated with the improved 2A75M/2A75-1 designation in secondary reporting, while Rostec’s English 2021 release still describes a 125 mm 2A75 cannon. The weapon is a low-recoil tank-gun derivative designed for the lightweight chassis. [Rostec 2021; RIA 2023; GlobalSecurity 2024] Sources
The base vehicle is usually listed with a 7.62 mm coaxial machine gun. The Sprut-SDM1 export/modernized standard includes a remote-controlled weapon station with a 7.62 mm machine gun in addition to the coaxial gun. [Rosoboronexport 2025; Army Guide 2026] Sources
Official material states that Sprut-SDM1 can fire armor-piercing sub-caliber, cumulative/HEAT, high-explosive fragmentation, remote-detonation ammunition, and guided ammunition/missiles, with targets reported at ranges up to 5 km. TASS also quoted Rosoboronexport saying Indian-produced T-72M1 and T-90S munitions could be used with Sprut-SDM1, an export-relevant claim rather than an independent ballistic test report. [Rostec 2021; TASS 2021] Sources
The original Sprut-SD had a stabilized gun and tank-style fire-control architecture, but its early electronics are less well documented in open sources. Sprut-SDM1 is explicitly marketed around a digital fire-control system, day/night operation, missile firing, improved team control, and modernized sensors. [TASS 2021; RIA 2023] Sources
Open sources agree that Sprut-SDM1 improved sighting and thermal/day-night capability, but specific sight designations vary and are not consistently verifiable. The presence of improved day/night fire control is described as well-documented, but specific sight model names as uncertain unless supported by manuals or official parts catalogs. [TASS 2021; Rosoboronexport 2025] Sources
Base Sprut-SD is commonly listed with a 2V-06-2S diesel of roughly 510 hp. Rostec’s Sprut-SDM1 release gives a UTD-29 500 hp multi-fuel diesel moving an 18-ton vehicle; Rosoboronexport catalog data and some secondary sources list different power/weight figures. This is a known data conflict, likely reflecting version, export configuration, or catalog simplification. [Rostec 2021; Rosoboronexport 2025; GlobalSecurity 2024] Sources
The vehicle uses hydropneumatic suspension, central to making a 125 mm gun workable on a light chassis and to controlling ground clearance for transport, firing, and terrain. The suspension is part of the recoil-management solution as much as a mobility feature. [GlobalSecurity 2024; Army Guide 2026] Sources
Mobility is the family’s major strength. Rostec gives 70 km/h on land and 10 km/h on water for Sprut-SDM1, while Rosoboronexport and secondary sources place road range around 500 km. Two rear waterjets provide amphibious propulsion. Sea-state claims vary between accounts; Rostec explicitly reported Black Sea maritime trials and firing tests in sea states up to 3 points. [Rostec 2021; Rosoboronexport 2025] Sources
The crew is three: commander, gunner, and driver, enabled by an autoloader. The driver is in the forward hull and the commander/gunner occupy the turret/fighting-compartment arrangement. Like other compact Russian autoloading vehicles, internal volume is limited; the advantage is low silhouette and mass, while the disadvantage is crew comfort, upgrade space, and survivability margin. [Rostec 2021; Army Guide 2026] Sources
Specific radio fits are not reliably public. Modern Sprut-SDM1 export claims emphasize improved team control and operation within a unified tactical command-and-control system. Airborne direct-fire vehicles rely on coordination with reconnaissance, dismounted troops, aviation, and anti-tank systems. [TASS 2021] Sources
Known or visible protection features include smoke grenade launchers, low silhouette, amphibious mobility, and possibly NBC/environmental protection in the broader BMD-derived family. There is no reliable evidence in open sources that Sprut-SDM1 carries a hard-kill active protection system as standard. Survivability depends primarily on tactical employment, terrain, and mobility. [GlobalSecurity 2024; ODIN 2024] Sources
Rostec reported an 8,000 km warranty-mileage state-trial program for Sprut-SDM1 while maintaining system reliability, but that is a manufacturer/government test claim. The family’s maintainability challenge is fleet scale: a small specialized vehicle is harder to support than a large MBT or IFV fleet unless it shares parts with BMD-4M and BMP-3/Kurganmashzavod production streams. [Rostec 2021; RIA 2023] Sources
The weaknesses are inherent: light armor, small numbers, uncertain production continuity, vulnerability to mines, top attack, artillery fragments, drones, ATGMs, and autocannon fire if misused, plus limited public evidence of combat performance. Sprut is dangerous when it shoots first from favorable terrain or water-obstacle/airborne contexts; it is vulnerable if employed like a main battle tank. [ODIN 2024] Sources
Production, operators, and combat record
It is not a mass-production MBT family. Open-source inventories, export pages, and Russian reporting all point to a small and specialized fleet. [IISS 2025] Sources
Manufacturing and design attribution varies by phase. Secondary sources tie the original 2S25 to Volgograd Tractor Plant and Russian artillery-gun design organizations; modern Sprut-SDM1 reporting connects the vehicle to Kurganmashzavod and Rostec’s High Precision Systems/High-Precision Weapons holding. RIA in 2023 described 2S25M as developed by the Volgograd enterprise VMK VgTZ, a subsidiary of Kurganmashzavod, on the basis of the 2S25 and unified with BMD-4M chassis assemblies. [Rostec 2021; RIA 2023] Sources
The production timeline is not clean. Published accounts describe the original vehicle at 2005+, while secondary sources sometimes cite official acceptance or production across 2005-2010 and later modernization activity. Because the original fleet was small, small differences in battery structure or storage status can change apparent totals. Published accounts describe “limited fleet” rather than a single definitive production number. [GlobalSecurity 2024; IISS 2025] Sources
The modernized Sprut-SDM1 appears to have passed through a long sequence of prototypes, trials, and readiness announcements. Rostec in 2021 projected completion of the full state-trial cycle in early 2022; RIA in 2023 reported trials complete and the vehicle ready for serial production after inclusion in the state defense order. That language does not, by itself, prove large-scale deliveries. [Rostec 2021; RIA 2023] Sources
Export production and licensed production remain speculative. TASS reported Rosoboronexport’s intention to bid Sprut-SDM1 in India’s light-tank tender and to offer technology transfer or local production of separate assemblies. That was a bid/offer statement, not a contract award. India ultimately pursued its own Zorawar light tank effort, so the Sprut offer is described as an export lead rather than confirmed operator status. [TASS 2021] Sources
Russia is the only confirmed operator in the available accounts. Published accounts describe 2S25/2S25M Sprut-SD/SDM1 in Russian service from the 2000s to the present as a limited airborne/amphibious fleet with classification ambiguity. Rostec identifies the Russian Airborne Forces as the main operator for Sprut-SDM1, while also emphasizing export markets. [Rostec 2021] Sources
Current fleet numbers are uncertain. The IISS Military Balance 2025 search result for Russia lists “SP 125mm 36+ 2S25 Sprut-SD” under guns, a useful indicator that the system is categorized in artillery/self-propelled gun inventories rather than ordinary MBT totals. Older open sources often cited 24 or 30+ vehicles. The accounts indicate that the fleet is small and limited, likely in the dozens rather than hundreds. [IISS 2025] Sources
No confirmed export operator was identified in reliable open sources in the cited accounts. Export interest has been reported or promoted for India, Asia, and the Middle East. A 2025 RUSI/AP-leaked-documents story described a reported Russia-China airborne equipment package including Sprut-SDM1 anti-tank guns, but this is described as a reported agreement or transfer plan, not a confirmed public Chinese operational inventory entry. [Rostec 2021; TASS 2021; RUSI/AP 2025] Sources
Reliable combat history is thin. Sprut-SD is an active Russian system and appears in open-source military references, but detailed first-combat use, tactical after-action reports, and verified kill/loss records are scarce. Sources
Tactical employment is easier to infer than to document: Sprut is suited to reconnaissance-fire support, ambush, direct fire against armor and fortifications, rapid exploitation by airborne or amphibious troops, and defense of light forces that cannot bring full MBTs. Rostec’s own description lists reconnaissance, raid or forward detachments, defense maneuvers, attacks through water obstacles, amphibious operations, and territory control as mission sets for Sprut-SDM1. [Rostec 2021] Sources
Strengths in combat would be firepower, low weight, amphibious mobility, and the ability to deploy where ordinary tanks cannot. Weaknesses would be survivability under modern ISR-strike conditions: drones, artillery, mines, ATGMs, loitering munitions, and autocannon can all negate the advantages of a lightly protected 18-ton vehicle if it is exposed or used as a substitute MBT. [ODIN 2024; GlobalSecurity 2024] Sources
The evidence indicates “insufficient verified open-source loss data,” not “no losses.”. [Oryx 2026] Sources
A common misconception is the “airborne T-90” idea. Sprut can use tank-caliber ammunition and can be lethal against armor, but it is not protected or intended like a T-90. The vehicle is best treated as a niche direct-fire weapon that borrows tank firepower, not as a main battle tank in miniature. [Rostec 2021] Sources
Legacy and historical evidence
The Sprut combines substantial gun power with the light protection and compact three-person layout of an airborne vehicle. Amphibious mobility and air transport are central to its intended role, but the small publicly documented fleet limits conclusions about reliability and sustained combat performance. Its specialized chassis and small production batches also distinguish it from a mass-produced main battle tank. [Rostec 2021] Sources
Sprut’s legacy is conceptual rather than numerical. It demonstrates that Russia still valued an airborne/amphibious tank-caliber gun system after the Cold War, even as many armies abandoned light tanks or folded direct fire into IFVs, ATGMs, and wheeled gun systems. It is one of the few modern vehicles that can credibly claim both a tank-caliber gun and amphibious/airborne design intent. [ODIN 2024; Rostec 2021] Sources
Its influence on later tank design is indirect. Sprut did not become a mainstream MBT pattern, but it prefigured the renewed global discussion over light tanks and mobile protected firepower. The debate around M10 Booker, Type 15, Zorawar, CV90120, and other direct-fire platforms resembles the Sprut dilemma: what amount of armor is enough when the mission demands strategic mobility? [TASS 2021] Sources
Surviving vehicles are visible in Russian military exhibitions and displays, and several clear-reuse photographs from Army-2015, Army-2016, and Army-2022 are embedded in the photographs. These are useful for identifying external features but does not establish combat images. [Wikimedia Commons 2015-2022] Sources
The modern reputation of Sprut is polarized. Supporters emphasize a unique combination of 125 mm gun, swimming, air transport, and light-force support. Critics emphasize light armor, small numbers, uncertain procurement, and the danger of using a thin-skinned vehicle in an environment dense with drones and anti-armor weapons. Both views are partly right; the vehicle is powerful only inside its narrow tactical niche. [Rostec 2021; ODIN 2024] Sources
Rostec, Rosoboronexport, RIA, and TASS are primary or state-aligned Russian sources and are valuable for official claims, but they are also promotional and is not established as independent performance validation. ODIN, IISS, GlobalSecurity, and Army Guide are useful secondary references, with IISS strongest for annual inventories. [Rostec 2021; RIA 2023; TASS 2021; IISS 2025] Sources
The best-established points are: the family exists; Russia is the confirmed operator; the vehicle is airborne/amphibious and uses a 125 mm gun; the crew is three; Sprut-SDM1 was promoted as a modernized fire-control/mobility/sensor upgrade; the family is classification-sensitive; state-trial and serial-production-readiness claims were made by Russian official sources. [Rostec 2021; RIA 2023] Sources
Less certain details include: exact road/water speeds and range; BMD-4M-related unification details; ammunition compatibility breadth; original fleet size in the several-dozen range; exact engine and powerpack data by variant; exact adoption year. These are widely repeated but not always consistent. [Rostec 2021; Rosoboronexport 2025; GlobalSecurity 2024] Sources
Unconfirmed details include: exact armor resistance; detailed combat record; exact losses; detailed unit assignments; reported China transfer/delivery; obscure alternate Sprut concepts beyond the core tracked airborne family. Sources
Photographs and image credits
Background reading and references. Each photograph has its own source and credit.
Sources and further reading
Background reading and references. Each photograph has its own source and credit.
- Rostec — “Rostec’s Sprut-SDM1 Light Tank to Undergo Firing Trials on the Black Sea,” 16 July 2021. — Accessed 5 June 2026
- Rosoboronexport — SPTP 2S25M catalog / land-forces artillery listing. — Accessed 5 June 2026
- RIA Novosti — “Rostec: novaya pushka Sprut-SDM-1 gotova k seriynomu proizvodstvu,” 14 August 2023. — Accessed 5 June 2026
- TASS — “Russia to bid in tender for delivery of light tanks to India,” 7 December 2021. — Accessed 5 June 2026
- IISS — The Military Balance 2025: Russia and Eurasia. — Accessed 5 June 2026
- U.S. Army ODIN WEG — “2S25 Sprut-SD Russian Light Amphibious Tank,” 12 November 2024. — Accessed 5 June 2026
- GlobalSecurity.org — “2S25 Sprut-SD” and “2S25M Sprut-SDM1 Self-Propelled Anti-tank Gun,” updated 30 August 2024. — Accessed 5 June 2026
- Army Guide — “2S25 Sprut-SD (Light tank)” and related 2S25M listing. — Accessed 5 June 2026
- Trackpads historical compilation, 2026 (unpublished).
- Oryx — “Attack On Europe: Documenting Russian Equipment Losses During The 2022 Russian Invasion Of Ukraine.” — Accessed 5 June 2026