Adaptive Tactical EX Performance Stock Kit, Fits Mossberg 500 12 Gauge, Forend and M4 Style Stock, Black AT-02006 The Adaptive Tactical Forend and M4-Style Stock for Mossberg Shotguns is optimized for pump shotguns. The advanced design features and high-impact polymer construction of the EX Performance Adjustable Stock and Forend make it an ideal choice when upgrading your Mossberg 500 and 590 series 12 gauge pump shotgun.The EX Performance Forend features a 2 inch picatinny rail concealed under the nose cap. Uncovered it's ideal for attaching tactical accessories like lasers or lights. The EX Performance M4-style Stock with pistol grip 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.