1 Tungsten weight to add over all weight to your buffer setup.
H2 Requires 1 extra Tungsten weight.
H3 Requires 2 extra Tungsten weights.
To change the Geissele Automatics H1 Buffer assembly to the heavier H2 or H3 buffer setup, you will need to disassemble and re-assemble the buffer replacing the steel weights with the correct number of tungsten weights
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