#html-body [data-pb-style=QLRSCXV]{justify-content:flex-start;display:flex;flex-direction:column;background-position:left top;background-size:cover;background-repeat:no-repeat;background-attachment:scroll}This BCA AR-15 complete 7.62x39 carbine length upper has a 16" heavy barrel with a parkerized finish, and features a 1:10 twist rate, with a carbine length gas system. It includes the new 11.5" MLOK rail, an M4 flat-top billet upper receiver, a BCA bolt carrier group, a flash hider, and a rear charging handle. This 7.62x39 upper is compatible with any mil-spec AR-15 lower. Featuring a 7.62x39 enhanced firing pin for increased reliability for steel cased ammo and upgraded bolt. Shop more 7.62 x 39 Uppers! Check out Magazines here! Check out our Ammunition Recommendations!*Note - We strive to provide the most accurate photographs of our product. Variations may occur in the skeletonized section of the handguard/flash hider you receive. WARNING: This product can expose you to chemicals, such as lead and other petroleum products, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to the California P65 Warning site.