Product Details
JMAC Customs GBC-13-W
(G)as
(B)lock
(C)ombo
(13) Collab with Sabrewerks13
(W)ith detent hole
The 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
- Uses standard detent and spring
- Has built in cleaning rod holder
- Weight 3.52 Ounces
- 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
These come stripped, as pictured, they do not include the windage drum, front sight post, detent, spring, or barrel component pins.
