Kibler locks are probably the best available today. As I recall the price of a Kibler lock alone is $300, quite a bit more than the most common locks. Higher prices don't necessarily mean higher quality, however high quality definitely justifies a higher price. I belive nearly all Kibler lock parts are machined, not cast.
Same price as a premium, factory-tuned Chambers lock and only
$80 more than brands that require $50-150 in labor to even be functional. Kibler is bringing superior design, quality, materials, value, and true parts interchangeability to the muzzloading kit and parts consumer.