The Sierra K is a purpose-driven compact stock, optimized for use on PDW and compact weapon systems. Features include reduced overall size and slim cheek profile, snag-free adjustment lever, limited rotation QD and integral fixed sling mounts, internal tensioners, and anti-slip buttpad. Mounts via shortened compact Mil-Spec receiver extension. Product Features Optimized for PDW and Compact Weapon Systems Low-Profile Adjustment Latch Slim-Profile Ergonomic Cheek Weld Color-Matched Steel Hardware Ambidextrous Fixed Sling Mounts and Limited Rotation QD Mounts Mil-Spec Materials and Finishes Mounts via Sierra K Receiver Extension Kit Product Specifications Weight: 6.6 oz Length: 5.63 in Width: 1.5 in Height: 3.8 in