Angstadt Arms Vanquish 9, Integrally Suppressed Barrel, 9MM, 10.5" Barrel, 11" Overall Length, 1.5" Diameter, 4140R Chrome-Moly Barrel with a 316 Stainless Steel Outer Shroud, Cerakote Finish, Black, Standard Barrel Install, Fits Mil-Spec Upper Receivers on the AR9 Platform AAVIS09B01