20mm Lahti L39 Antitank Rifle (Shooting & History)

Published on May 1, 2025
Duration: 0:57

This guide details the operation of the Lahti L39 Antitank Rifle, as demonstrated by Ian McCollum of Forgotten Weapons. It covers manual bolt cycling using the integrated crank handle and magazine insertion. Crucially, it emphasizes a critical safety warning regarding hand placement near the action due to violent recoil and muzzle blast. The Lahti L39 is a semi-automatic rifle that locks open after each shot, requiring manual manipulation to chamber the next round.

Quick Summary

The Lahti L39 Antitank Rifle is a semi-automatic firearm that locks open after each shot. Operation involves a manual crank handle to cycle the heavy bolt action and a 10-round top-loading magazine. Critical safety includes keeping hands clear of the violent action path.

Chapters

  1. 00:00Mechanical Operation
  2. 00:12Manual Bolt Cycling
  3. 00:26Loading and Safety
  4. 00:44Live Fire Demonstration

Frequently Asked Questions

How is the bolt cycled on the Lahti L39 Antitank Rifle?

The Lahti L39 is a semi-automatic rifle that locks open after each shot. To manually cycle the bolt, a dedicated crank handle is used: push it in, unlock it, and rotate it about two full revolutions to lock the bolt back.

What are the key safety considerations when operating the Lahti L39?

A critical safety warning involves never placing a hand in front of the trigger guard due to the violent action movement. Proper manual bolt cycling is also essential to prevent malfunctions.

What is the ammunition capacity of the Lahti L39?

The Lahti L39 Antitank Rifle utilizes a 10-round box magazine, which is inserted into the top-loading port of the receiver.

What is the caliber of the Lahti L39?

The Lahti L39 fires a 20mm round, specifically the 20x138mmB Solothurn Long cartridge, making it a powerful anti-materiel weapon.

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