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Finnish M39 Mosin-Nagant

Sako · Sniper Rifle

Finnish M39 Mosin-Nagant

Bolt action · 7.62x54mmR · introduced 1939

Also known as M/39, Ukko-Pekka, Finnish Mosin M39

About the Finnish M39 Mosin-Nagant

The Finnish M39 is widely regarded as the finest Mosin-Nagant variant ever produced, representing the pinnacle of Finnish gunsmithing applied to the Russian bolt-action platform. Built on captured or purchased Russian Mosin-Nagant receivers by SAKO, VKT, and Tikkakoski, the M39 featured a superior Finnish-made barrel, an improved two-stage trigger, a distinctive pistol-grip stock made from Arctic birch, and an enlarged trigger guard to accommodate mittened fingers in sub-arctic conditions. The result was a rifle significantly more accurate than standard Soviet Mosin-Nagants, renowned for its sub-MOA capability with quality ammunition.

While Simo Hayha, the legendary 'White Death' with over 500 confirmed kills during the Winter War, actually used the earlier M28/30 variant, the M39 represents the culmination of the Finnish precision rifle tradition that produced him. Finnish snipers using M39 and earlier Finnish Mosin variants were so effective during the Winter War that the Soviets nicknamed them 'cuckoos,' believing the deadly accurate fire came from snipers hidden in the trees. The M39's reputation for accuracy made it the gold standard by which all Mosin-Nagant variants are judged by collectors and shooters worldwide.

Finnish M39 Mosin-Nagant specifications

General

Type
Sniper Rifle
Action
Bolt action
Firing mechanism
Striker-fired
Trigger
Two stage
Calibres
7.62x54mmR
Magazine capacity
5 rounds
Magazine
Internal

Dimensions

Barrel length
686 mm (27.0 in)
Overall length
1188 mm (46.8 in)
Weight (empty)
4.31 kg (9.50 lb)
Weight (loaded)
4.54 kg (10.01 lb)

Barrel

Rifling twist
1:9 in (240 mm)
Rifling
Right hand
Grooves
4

Materials

Barrel
Steel
Receiver / frame
Steel
Stock
Arctic birch
Finish
blued

Performance

Muzzle velocity (typical)
800 m/s (2625 fps)
Muzzle energy (typical)
3780 J (2788 ft·lb)
Effective range
800 m

History

Introduced
1939
Discontinued
1970
Production status
Out of production
Country of origin
FI
Designer
Finnish Defence Forces / SAKO

Features

  • Pistol grip stock
  • Finnish precision barrel
  • Improved sights
  • Trigger guard enlarged for mittens
  • Sling swivels
  • Stripper clip compatible

Safety

  • Bolt safety

The M39 was the last and best of the Finnish Mosin-Nagant variants, incorporating lessons learned from the earlier M27, M28, and M28/30 models. Finnish barrels were made to tighter tolerances than Soviet production, and each rifle was individually test-fired for accuracy. The pistol-grip stock appeared on most production examples, though some early stocks were straight. Simo Hayha actually used the earlier M28/30 variant rather than the M39, as the M39 was still entering production during the Winter War. The M39 remained in Finnish reserve service into the 1980s and is one of the most sought-after military surplus rifles among collectors.

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