The Accu-Tac B4 simply adjusts for height and uneven surfaces. The legs are quite simple to deploy; just pull them out and adjust the angle to your liking. The pull-to-unlock purpose is perfect for a subject bipod, Specifically one that has spike feet. Overall, this bipod seems to be great, https://emilianozumkz.slypage.com/32733221/a-simple-key-for-bipods-unveiled