JMac - MDi-co

GBC-13 Gas Block - Without Detent Hole

(4 Reviews)
Current Stock:
3.56 Ounces




(13) Collab with Sabrewerks13

(Without) detent hole


PLEASE READ THIS FIRST: These come stripped, they do not include the windage drum, front sight post, or barrel component pins.

If you would like those items click on the links below and add them to your cart. 

This does NOT 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 (available for purchase here - Windage Drum Front Sight Post
  • 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
  • Weighs 3.59oz

We recommend having a Kalashnismith install.


It all started with a high definition scan of an original part from Larry Vickers, then we teamed up with Sabrewerks13 to oversee the casting process, and finally back to us for machining. 

Reviews (4)


Written by Ronnie Jones on Apr 20th 2021

These combo blocks are always great. Quality is consistent and great.

gasblock sight combo

Written by Raymond Zeigler on Apr 2nd 2021

PERFECT! Good price, FAST shipping and very well made product. I will be purchasing another. I was pleasantly surprised by how much the balance of my rifle improved following the install of this gas block sight combo. 5 star review!!!

Quick shipping, great communication and answered all of my questions about the products that I am interested in. Almost of all, amazing products!!!

Written by Chase Dela Cruz on Aug 26th 2020

Bought 2 non detent gas block sights and they came well packaged. The product itself is real good quality and the coating is beautiful!!! Worth every penny!!! Great product and people to do business with.


Written by Issac Karnes on Apr 2nd 2019

Super clean , nice finish and well built . One drawback is you need a press to install . That is expected though. This will take weight off of your ak. But one!!

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