I've had three jams out of 100 rounds. Empty round still retained in extractor, with new round stuck underneath and part way into the barrel when action tried to close. Was using Magtech and Remington umc fmjs. Was switching back and forth between the two brands, so not sure which or if both brands jammed, but when I finished off the last of the 20 or so rounds of Magtech, didn't have a problem. Odd thing was, all three jams were the next to last round fired from the mag. Had previously disassembled, and cleaned/oiled the mag. along with the gun. Fired case shipped with the LCP dated 7/22/08, so should be the latest version per previous postings here. Going to stick to Magtech for the next 100 rounds, and see what happens.