S length. Guaranteed you require some force, but this is due to The point that the quick regulate buckle is held in position by friction. This could be the weak point to someone but I have discovered this for being of no problems for me, the sling has not skipped https://magpulrvg76252.mybjjblog.com/the-definitive-guide-to-ke-arms-stripped-polymer-kp-15-rifle-lower-receiver-47279217