The Leapers UTG PRO Model 4 S3 Stock Kit is molded from high impact reinforced polymer materials. This stock features an ergonomically chamfered rubberized butt pad and a slanted cheek rest that enhances shooting stability and consistent firearm control.Key FeaturesIncluded Components: Kit includes a polymer stock, mil-spec 6-position extension tube, buffer, buffer spring, tear-drop ring, and castle nut.Ambidextrous Design: Features an integral ambidextrous sling loop and ambidextrous QD sling swivel housing for left or right handed shooters.Ergonomic Design: Stock has fully dehorned corners and melted contours for snag-free use.