Kahr has taken their design a step further and achieved a significant technological breakthrough in terms of packaging a powerful yet accurate self defense pistol. The MK40 platform will easily fit within any pocket pistol size definition. The MK40 is a lock-breech double-action-only pistol that uses a Browning-type recoil lug and a passive striker block. The MK40's frame and slide are of stainless steel and have a matte appearance. Accuracy is assured by the MK40's polygonal rifling with a 1 in 16 right-hand twist.