First time I ever purchased this brand of ammunition. It looked good and had a good reputation. I fired approximately 30 rounds through a Shadow Systems MR 920 Combat and had no problems. Then fired 10 rounds from a SA 1911 EMP, and when the second magazine was inserted, that first-round jammed the entire action, I was unable to unlock the slide and had to take the weapon to my gunsmith, who had to use a vise and a plastic mallet to free the slide. That unfired round was found to be oversized and could not be seated into the chamber of the weapon fully and that is what jammed the slide. I am in the process of checking every round in the six boxes I purchased to make sure that the remainder of the 124-grain red box 9mm rounds are okay. Just beware when purchasing this brand to check each round for the correct size before firing. Never had this happen ever before on factory-produced ammunition. Just a word of caution. I will update this post once I have finished checking the remainder of the ammunition, Thanks!!