Why is there a hole in Graves's shotgun?

Really? Well I didn't know that... But is this a reason for some of its pieces floating? x)

Alright but why does it still floats x)

I completely forgot about that, wow. But speaking extremely strictly hextech would refer to weapons with a Brackern gemstones as a source of magic, such as and 's hearts, 's Z drive and 's hammer. Even upgraded to hextech and it was mentioned that 's rifle is hextech. Or are you speaking in general referring to Piltover tech as 'hextech' (I am asking because I know people do this sometimes, myself included).

From the Piltover-Zuan update in Dec-Jan gone we saw that there exists hextech, chemtech and clockwork mechanics and maybe more. And 's shotgun is unlike both rifle and the chemtech shotgun we saw in the cinematic. Edit: Now I have a weird feeling that or is the mentioned gunsmith.