JMac Customs GBC-13 Gas Block with Detent Hole Black Nitride Black GBC-13-W. 5'' pin/weld or SBR/Pistol Package Contents: JMac Customs GBC-13 Gas Block w/ Detent Hole JMac Customs GBC-13-W: GBC-13 Gas Block with Detent Hole Black Nitride Black
JMac Customs GBC-13 Gas Block with Detent Hole Black Nitride Black GBC-13-W. 5'' pin/weld or SBR/Pistol Package Contents: JMac Customs GBC-13 Gas Block w/ Detent Hole JMac Customs GBC-13-W: GBC-13 Gas Block with Detent Hole Black Nitride Black