This auction is for a KA-BAR Attachment System 9916.  This item is new/old stock.  

The KA-BAR Attachment System features two sets of loops, one large and one small, for a total of four. The Attachment System is made from CelconĀ® and comes with eight (8) slotted truss screws #8-32 x 3/8", eight (8) posts #8-32 x 3/8", and eight (8) spacers. The KA-BAR Attachment System is designed to work in a number of configurations, including horizontal carry, and may work with other products outside of the KA-BAR lineup, such as holsters. It is MOLLE-compatible; MOLLE straps and/or cordage are not included.

Look closely at the pics.