Make: JMac Customs Model: GBC-13 Gas Block Detent Hole: No Threads: 24mm
Features
(G)as (B)lock (C)ombo (13) Collab with Sabrewerks13 (Without) detent hole
GBC-13 is a copy of the East German 74nk Front Sight Gas Block Combo
Features:
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
Notes:
Does not include the windage drum, front sight post, or barrel component pins
This does NOT have a Detent Hole in the Front
Reviews
Q & A
Retail Stock
Compliance
All NFA Rules Apply.
These items are controlled by the U.S. Government and authorized for export only to the country of ultimate destination for use by the ultimate consignee or end-user(s) herein identified. They may not be resold, transferred, or otherwise disposed of, to any other country or to any person other than the authorized ultimate consignee or end-user(s), either in their original form or after being incorporated into other items, without first obtaining approval from the U.S. government or as otherwise authorized by U.S. law and regulations.