I ordered it in September and received it in December, but I didn't use it until my suppressor permit cleared this month. I fired a total of 92 rounds of new, factory 230 grain FMJ from my Springfield XD .45 over two sessions with my AAC Ti-Rant. The lug broke off the bottom of the barrel on shot #92. The empty did not extract (although it was easily extracted with a fingernail) and the slide and barrel ended up about 1" forward from the battery position. I know I didn't do anything abnormal, and I hope EFK backs their Lifetime Warranty more quickly than my order took to fill originally.
Very strange.