Infantry Weapons

AKMS

Also known as
  • 6P4
  • AKMS 6P4
  • Avtomat Kalashnikova Modernizirovanny Skladnoy
  • Avtomat Kalashnikova Modernized Folding
  • AKMSN
  • AKMSL
  • AKMSR
  • kbk AKMS

The AKMS is the under-folding-stock member of the Soviet AKM assault-rifle family, retaining the stamped receiver, long-stroke gas system, select-fire controls, and 7.62x39mm chambering while shortening the rifle for airborne troops, vehicle crews, and compact carry. Conflict Armament Research and ARES documentation places AKMS-family rifles in Islamic State stocks around Kobane and in a 2022 Ukrainian police seizure from an alleged Russian saboteur, showing how older Kalashnikov-pattern rifles remain visible in modern war.

Role in Conflicts

Profile / Specs

Profile

Origin
Soviet Union
Type
Folding-stock 7.62x39mm assault rifle
Service note
Adopted with the AKM family in 1959; still encountered in modern conflicts through legacy stocks and licensed derivatives.
Designer
Mikhail Kalashnikov design lineage
Designed
1950s AKM family; AKMS folding-stock variant adopted with the AKM in 1959
Produced
1959-era Soviet production, with licensed and derivative production abroad
Number built
Part of the widely produced AKM family; AKMS-specific totals vary by producer and are not consistently published

Specifications

Caliber
7.62x39mm M1943
Action
Gas-operated, selective fire
Weight
3.53 kg unloaded for AKMS
Length
907 mm stock extended; 657 mm stock folded
Barrel Length
436 mm, muzzle to bolt face
Feed
30-round detachable box magazine
Rate of Fire
About 600 rounds per minute
Muzzle Velocity
715 m/s
Stock, Sights, And Accessory Fit

The AKMS keeps the AKM operating system but changes the carry and accessory profile around a metal under-folding stock. That makes the page useful to read as a compact AKM-family variant rather than a separate rifle design.

FeatureDocumented detailWhy it matters
Under-folding stockGunRF identifies the AKMS 6P4 as the folding-stock AKM modification adopted in 1959 for airborne assault and special-operation users.Explains the shorter folded profile while preserving AKM ballistics and 7.62x39mm ammunition.
Night-sight versionsGunRF lists AKMSR, AKMSL, AKMSN, AKMSN2, and AKMSN3 variants matched to NSP-series night sights.Separates plain folding-stock rifles from receiver-rail variants intended for night optics.
Grenade-launcher fitGunRF lists the GP-25 as mountable on AKMS rifles; the linked GP-25 Kostyor, 40 mm under-barrel grenade launcher, Infantry WeaponsGP-25 Kostyor record covers the launcher itself.Shows how the compact rifle could be paired with a 40 mm underbarrel launcher without treating the launcher as a rifle variant.
Variants

AKMS designations mostly separate the folding-stock layout, night-sight rails and optics, and licensed national production rather than a different 7.62x39mm operating system.

VariantConfigurationDesignation notes
AKM, 7.62x39mm assault rifle, Infantry WeaponsAKMFixed-stock parent family member

GunRF describes the AKMS, indexed 6P4, as the folding-stock modification adopted alongside the fixed-stock AKM in 1959.

Sources: GunRF AKM and AKMS assault rifles

AKMSR / AKMSL / AKMSNNight-sight folding-stock variants

GunRF lists AKMS night versions with left-side receiver rails for NSP-series night sights, including AKMSR, AKMSL, AKMSN, AKMSN2, and AKMSN3 configurations.

Sources: GunRF AKM and AKMS assault rifles

Polish kbk AKMSLicensed Polish under-folding variant

CAR documented a Polish kbk AKMS manufactured in 1982 among weapons captured from Islamic State forces in Kobane.

Sources: Islamic State Weapons in Kobane

Licensed and derivative folding-stock AKM-pattern riflesForeign production and close derivatives

Small Arms Survey identifies the AKMS alongside later Type 56-1, Misr, and short Tabuk under-folding AKM-family derivatives.

Sources: Kalashnikov AKM (& close derivatives)

Ammunition Fired

The AKMS uses the same Soviet intermediate cartridge family as the fixed-stock AKM.

AmmunitionAmmunition typeFiring evidence
7.62x39mm cartridge, Intermediate rifle cartridge, Munitions7.62x39mm cartridgeIntermediate cartridge

GunRF and Small Arms Survey identify the AKMS as chambered for the 7.62x39mm M1943 cartridge, matching the AKM-family ammunition baseline.

Sources: GunRF AKM and AKMS assault rifles, Kalashnikov AKM (& close derivatives)

Underbarrel Grenade Launcher Compatibility
Compatible itemItem typeCompatibility evidence
GP-25 Kostyor, 40 mm under-barrel grenade launcher, Infantry WeaponsGP-25 Kostyor40 mm underbarrel grenade launcher

GunRF lists the GP-25 as mountable on AKMS rifles, giving the folding-stock rifle a compatible 40 mm grenade-launcher option.

Sources: GunRF GP-25 rifle-attached grenade launcher

Timeline

AKMS Key Events

  1. AKM family adopted

    GunRF gives 8 April 1959 as the Soviet adoption date for the AKM and describes the AKMS 6P4 folding-stock modification as adopted simultaneously.

  2. GP-25 compatibility enters service

    GunRF describes the GP-25 underbarrel grenade launcher as fielded in 1978 and mountable on AKMS rifles.

  3. Polish kbk AKMS documented in Kobane

    CAR documented a 1982 Polish kbk AKMS among Kalashnikov-pattern rifles captured from Islamic State forces during the battle of Kobane.

  4. AKMS seized in Zaporizhzhia

    ARES documented an AKMS among weapons seized by the National Police of Ukraine from an alleged Russian saboteur in Zaporizhzhia.

Media
Related Weapon Systems
AKM, 7.62x39mm assault rifle, Infantry WeaponsInfantry WeaponsAKM7.62x39mm assault rifleThe AKM is the stamped-receiver modernization of the Soviet Kalashnikov assault rifle, chambered for 7.62x39mm and built around a long-stroke gas piston and rotating bolt. Adopted in 1959, it reduced production burden compared with earlier milled-receiver AK rifles and became a widely licensed baseline for later 7.62mm Kalashnikov-pattern weapons. CAR and ARES field documentation continues to place AKM and AKM-pattern rifles in modern conflict stocks, from Islamic State recoveries in Iraq and Syria to Taliban captures in Afghanistan.
AK-47/AKM rifle family, Selective-fire assault rifle family, Infantry WeaponsInfantry WeaponsAK-47/AKM rifle familySelective-fire assault rifle familyAK-47/AKM-family rifles are Kalashnikov-pattern small arms derived from the Soviet AK-47 and 1959 AKM modernization, usually chambered in 7.62 x 39 mm. In the post-2015 catalog they appear with FARC dissidents in Colombia, gangs in Haiti, PKK fighters, GNA scouts in Libya, insurgents in Mali, Islamic State forces in Iraq and Syria, militants in Sinai, RSF units in Sudan, Hamas fighters in Gaza, Taliban fighters in Afghanistan, Boko Haram-linked militants in the Lake Chad basin, and Houthi-linked supply chains in Yemen.
Type 56 assault rifle, 7.62x39mm Kalashnikov-pattern assault rifle, Infantry WeaponsInfantry WeaponsType 56 assault rifle7.62x39mm Kalashnikov-pattern assault rifleThe Type 56 is China's 7.62x39mm Kalashnikov-pattern assault rifle family, adopted in 1956, built in very large numbers, and exported widely through state, surplus, and illicit channels. Its early rifles followed the Soviet AK-47 with milled receivers, later production used AKM-style stamped receivers under the same designation, and many examples are recognizable by a permanently attached folding spike bayonet. In the 2009 Boko Haram Insurgency, Small Arms Survey and Stimson reporting link Chinese Type 56 rifles to weapons seized from Boko Haram members and to materiel captured during the 2016 Bosso camp attack in Niger.
AK-103-2 assault rifle, 7.62x39mm assault rifle variant, Infantry WeaponsInfantry WeaponsAK-103-2 assault rifle7.62x39mm assault rifle variantThe AK-103-2 is the three-round-burst export variant of the Russian AK-103, a 7.62x39mm AK-100-series rifle derived from the AK-74M layout but chambered for the older AKM cartridge. In the 2009 Boko Haram Insurgency context, available open-source evidence is limited: the specific AK-103-2 identification comes from visual reporting of Boko Haram militants around Lake Chad, while separate Nigerian court reporting documents alleged AK-103 rifle trafficking from Diffa toward a Boko Haram recipient.
Type 56-1 assault rifle, 7.62x39mm under-folding-stock assault rifle, Infantry WeaponsInfantry WeaponsType 56-1 assault rifle7.62x39mm under-folding-stock assault rifleThe Type 56-1 is the under-folding-stock member of China's Type 56 Kalashnikov-pattern rifle family, chambered for 7.62x39mm ammunition and built for compact carriage by infantry and irregular forces. Modern Firearms and museum records identify it as a Chinese Type 56-family rifle made by state arms factories and NORINCO, while field and interdiction reporting links Type 56-1 rifles to Boko Haram seizures in Niger and Iran-backed supply channels for Houthi-aligned forces in Yemen.

Sources