DAA Dry-Fire Practice MagazineThe DAA Dry Fire Practice Magazine is designed to emulate as closely as possible the feel and performance of a fully loaded real magazine. It allows you to dry fire without introducing dummy loaded rounds to weigh down real magazines, which can be risky, and saves wear on your real mags. Using internal steel weights, it comes close to the actual weight of a fully loaded mag, and the Patent Pending spring loaded follower on the top of the mag pushing