BumpStop
The BumpStop makes pin tumbler locks resistant
to lock bumping. The technology uses a unique
reverse-rake tapered driver pin, high-performance
springs and tightly machined cylinder chambers.
During a bump attempt, it prevents the transfer of
force from the bump key to the pins and blocks
rotation of the cylinder. An oversized tumbler diameter
keeps the pin from fully entering the plug,
and the reverse taper improves pick resistance.