The Strike Stacked Angled Grip with Cable Management SystemA(R) is a modular rail attachment that allows the user to adjust the preferred length when paired with the optional Strike Stacked Angled Grip (sold separately) Extension. This item is the Stackable Extension Pieces only. With the stackable Extension pieces, the shooter can apply different grip techniques to adapt to various scenarios or sized hands. The grip angle sits on the handguard at 86 degrees and is compatible with M-LOK slots. Also included is the patent pending SI Cable Management SystemA(R) (CMS) function which enables you to organize and store excess wire from your weapon light or any other cabled accessories. Cables Mfg: Strike Industries