View Full Version : New armorer tools from Geissele Automatics

01-09-2015, 06:51 AM
The Geissele Reaction Block is designed to aid in the assembly of lower receivers. Once the armorer has installed the buffer tube onto the lower; the buffer tube and lower receiver assembly can be slid into the Reaction Block at the 12, 3, 6 and 9 o’clock positions. This allows the armorer to rotate the [...]

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