Geissele Reaction Block®

Enhanced Assembly for Lower Receivers

The Geissele Reaction Block® is designed to assist armorers during the assembly of lower receivers. After installing the buffer tube, the lower receiver can be securely positioned in the Reaction Block at the 12, 3, 6, and 9 o’clock orientations.

Key Features

• Rotatable Design: Rotate the lower receiver by 90° increments by loosening the provided nylon screws.
• Hands-Free Operation: Keeps both hands free, reducing time and frustration during assembly.
• Stable Platform: Offers an ultra-stable base for a variety of lower receiver operations.
• Buffer Retainer Nut Installation: Simplifies and speeds up the process of installing the buffer retainer nut.

Efficient and Convenient

The Reaction Block allows for precise adjustments and secure placement, making it an indispensable tool for armorers. Its design streamlines the assembly process, saving valuable time and improving efficiency.