I believe HG and KR were each shot in the eye. I might interpret that as symbolic, as if the W4 were sending a message that HG and KR had "seen" something they should not have and could identify/implicate the W4. It will be interesting to find out who shot whom.
I think with HG it could possibly just happened with shooting her that many times. I'm not sure it has significance with her. I'm not sure what to think with KR...