Meet the Advanced Shoulder Pocket: a weapon stabilization system that helps shooters maintain a stable and repeatable firing position. In other words, it helps you put your weapon in the same exact position every time. It locks into your shoulder and lets you engage your weapon one-handed or change your magazine quicker and more effectively without putting unneeded pressure on your arm.
The ASP has a buttstock attachment and a vest attachment. It has a modular design and can be taken off quickly. Each component has rare earth magnets to help you hold your weapon in the same exact position every time. There is a lot to like here. A truly interesting product by Asymmetric Technologies.