this system used a ball and socket joint between the frame and rucksack belt (which in itself formed the waistbelt of the MOLLE vest). This method led to numerous lower back injuries due to the ball (mounted on the frame) missing the socket on the waistbelt and hurting the user's body. Subsequent redesign of the SDS MOLLE led to the deletion of this feature and thus the vest (FLC) and ruck/frame were separate non-integral items. See also Individual Integrated Fighting System (IIFS) Interceptor body armor Personal Load Carrying Equipment (PLCE), used by the British Army References External links ciehub.info gear-illustration.com Military equipment introduced in the 1990s Military equipment of the United States Personal military carrying equipment