Leader Brawl problem - should I open or return?

Last night my wife saw Leader Brawl at a Target and picked him up for me! However he was one of only two and the packaging was fairly beat up on both. She examined the two and the chest piece of one looked wrong to her so she got the other one and brought it home.
Upon inspection of the box I can see that one of the 'mid-sized cannons' on the turret seams to have popped/broken off.
Reference for the base of the two cannons above the main cannon:
http://www.seibertron.com/toys/fullsize ... 2&image=56
http://www.seibertron.com/toys/fullsize ... 2&image=57
So here's my question for those that have him: are those meant to pop off??? If this is something were I can open the toy and simply re-attach this piece that's awesome! But if it isn't supposed to be removed at all, even as a child safety thing, then I'm going to return him....
Thanks!
S.P.
Upon inspection of the box I can see that one of the 'mid-sized cannons' on the turret seams to have popped/broken off.
Reference for the base of the two cannons above the main cannon:
http://www.seibertron.com/toys/fullsize ... 2&image=56
http://www.seibertron.com/toys/fullsize ... 2&image=57
So here's my question for those that have him: are those meant to pop off??? If this is something were I can open the toy and simply re-attach this piece that's awesome! But if it isn't supposed to be removed at all, even as a child safety thing, then I'm going to return him....
Thanks!
S.P.