Geissele AR10 Reaction Rod

The Geissele AR10 Reaction Rod is a tool designed to assist with maintenance and assembly of .308/7.62 AR-pattern upper receivers. Intended for use with a bench vise, the rod supports the upper receiver by engaging directly with the barrel extension via integrated splines. This configuration helps stabilize the assembly during tasks such as barrel installation, removal, and other component adjustments.

By transferring torque forces through the barrel extension rather than the receiver body, the Reaction Rod is designed to reduce stress on the upper receiver during use. This approach can help minimize the need for additional disassembly, such as removing optics or accessories mounted to the rail. The tool is suitable for a range of armorer and maintenance applications involving AR10-pattern rifles.

Specifications

• Compatibility: AR10 / .308 / 7.62 AR-pattern upper receivers
• Application: Barrel installation, removal, and upper receiver maintenance
• Mounting: Designed for use with a bench vise
• Interface: Engages barrel extension via integrated splines
• Function: Transfers torque through barrel extension
• Use Case: Gunsmithing and armorer tasks
• Material: Steel construction
• Compatible with:
  • SR25 Pattern
  • DPMS/LR308 Pattern
  • AR10 Pattern
• Not Compatible with:
  • DPMS G2 Pattern
  • DD5 V4 .308
  • HK MR7.62 / HK417