Product Description Phosphate Finished 1×9 Twist Feed Ramps .750 Gas Block Area Carbine Gas System Threaded 1/2 x 28 Don’t forget to pick up a handguard to match your new barrel.
AR-15 Upper Assembly, 16" Phosphate Barrel 15" Slim Rail MSRP: Was: Now: $389.95 - $409.95 Choose Options
AR-15 Upper Assembly, 16″ Phosphate Barrel, 15″Quad Rail MSRP: Was: Now: $263.99 - $283.99 Choose Options