Advanced design and high-impact, polymer construction make the EX Performance Adjustable Stock the ideal upgrade for your AR15 or M4. The EX Performance M4-style Stock features an easy-to-reach rapid adjust lever for custom length-of-pull, and includes an integrated QD swivel attachment and molded in non-rust standard sling swivel attachment. Durable polymer construction with non-slip vented rubber recoil pad, oversized extra strength adjustment pin, and sleek industrial design. FeaturesDesigned for owner installationM4-style stock with adjustable length-of-pullEasy to reach rapid adjust leverIntegrated QD swivel attachmentCompatible with Mil-Spec sized extension tubes