JMAC Customs GBC-13 Gas Block - With Detent Hole - Adjustable

PLEASE READ THIS FIRST: This combo includes the windage drum, KNS .052 Ball front sight post, detent and detent spring.

This HAS 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
• Adjustable Set Screw
• 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 (included)
• Available with detent and spring at 12 o'clock location (included) (accepts standard AKM spring and detent)
• 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

We recommend having a Kalashnismith install.

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