Nope.. Thats the tube magazine.. twist and slide out, shells get fed through the port on the right side of the butt stock.
The latch is in front of the bolt on the bottom of the receiver, the knurled collar between the receiver and barrel gets turned to lock and release the barrel, once the collar is loosened, flip the latch and twist the barrel 90 degrees, install is just the opposite, install the barrel 90 degrees off, twist and tighten the collar, once all is tight lock the latch, depressing the bolt slightly helps during removal and install.