Caldwell Bipod, XLA, M-LOK/KeyMod Compatible, 9-13 Height, Adjustable, Black 1081951 Caldwell's XLA 9"-13" M-LOK/KeyMod compatible bipod deploys quickly with legs that spring out to the shooting position giving you an instantaneous stable shooting platform. It attaches to M-LOK or KeyMod handguards with one of the two included mounts. Strong and lightweight" it's collapsible for easy transport.