Advanced Technology International (ATI) has introduced the ATI Raven for the Benelli M4 semi-automatic shotgun. This U.S.-made six-position adjustable stock and forend has an adjustable soft-touch polymer cheekrest and a buffer tube tension mechanism designed to provide the perfect amount of drag when adjusting the stock's length of pull. A sleek forend-integrated heatshield hovers over the barrel of the shotgun, preventing any metal-to-metal contact. The forend also has a soft touch over-mold to provide a comfortable non-slip texture. Most parts are manufactured of Military Type III Anodized 6061 T6 Aluminum. The ATI Raven stock comes with a limited lifetime warranty.