Finnish Jatimatic SMG

Published on September 17, 2012
Duration: 6:29

This guide details the field stripping and bolt operation of the Finnish Jatimatic SMG, as demonstrated by Ian McCollum. It covers the unique takedown method using the sling swivel and the function of the folding grip as a safety and charging handle. The video highlights the Jatimatic's straight blowback, open-bolt design and its unconventional recoil mitigation system.

Quick Summary

The Finnish Jatimatic SMG features a unique offset receiver where the bolt moves at an upward angle to mitigate recoil. Its folding front grip acts as both a charging handle and a safety mechanism. Takedown involves depressing the rear sling swivel to open the receiver, and the barrel is removed by rotation.

Chapters

  1. 00:10Introduction to the Jatimatic SMG
  2. 00:50Mechanical Design and Recoil Control
  3. 01:29Features and Controls (Folding Grip)
  4. 02:16Construction and Takedown Procedure
  5. 03:06Internal Components (Bolt Carrier)
  6. 04:08Barrel Removal and Machining
  7. 05:37Historical Context and Practicality

Frequently Asked Questions

What is the primary unique feature of the Jatimatic SMG's design?

The Jatimatic SMG's most distinctive feature is its offset receiver, where the bolt travels at an upward angle relative to the barrel. This design leverages gravity and upward momentum to help counteract muzzle climb and recoil during automatic fire.

How does the Jatimatic SMG handle safety and charging?

The Jatimatic utilizes a folding front grip that serves as both the charging handle and the safety mechanism. Folding the grip into the receiver locks the bolt in place, rendering the firearm safe.

What are the main construction materials of the Jatimatic SMG?

The Jatimatic SMG is constructed with a polymer lower receiver and a stamped sheet metal upper receiver. This combination of materials was common in firearms designed during the 1980s for cost-effectiveness and weight reduction.

What is the takedown procedure for the Jatimatic SMG?

To field strip the Jatimatic SMG, one must depress the rear sling swivel, which acts as a latch, allowing the upper receiver to hinge open. The barrel can then be removed by rotating it 180 degrees.

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