JMac Customs GBC-13 – With Detent Hole

JMac Customs  GBC-13 – With Detent Hole

(G)as (B)lock (C)ombo (13) Collab with Sabrewerks13 (With) detent hole

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

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 
• 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 with detent and spring at 12 o’clock location (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