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JMAC Customs GBC-13 AK Gas Block With Detent Hole

Gas Block

Out of stock

JMAC Customs GBC-13 AK Gas Block With Detent Hole


PLEASE NOTE: These come stripped, they do not include the windage drum, front sight post, or barrel component pins. This have a Detent Hole in the Front.


GBC-13 is a copy of the East German 74nk Front Sight Gas Block Combo

  • Perfect for Pistol, SBR, and Rifle builds to lighten up the front end and give it a custom look
  • Fits common 0.591" gas block barrel journals 
  • Has 90* gas port and is a direct replacement for most 90* gas blocks, will work on 45* gas ports with minor gun-smithing
  • Uses standard front sight windage drum and pin
  • Has built in cleaning rod holder
  • Cast in the US using Wax Casting techniques similar to the modern Russian barrel components
  • Machined in the US
  • 4140 Heat Treated to Rockwell 32C
  • Black Nitrided in the US
  • Weight 3.4 oz. 
More Information
Product Type Gas Block
Manufacturer JMAC Customs
Option Non-Adjustable
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