Definition: In this task, you're given reviews from Amazon's products. Your task is to generate the Summary of the review.
Input: First, these do not cycle well from magazines in either pistols or rifles. They may even damage feed lips on mags. Therefore, these are worthless for a training aid. Second, they are brittle and have a limited life span. The only use for these would be for function testing since you can see a notch cut out in the cap after firing it so you can see if your firing pin is working.

Do not cycle well from magazines, cheap-limited life span