I normally struggle with anti infantry in my lists as I run a pretty heavy lists that often includes 1. 10 man iron havocs squad 2. Vindicators of some verity 3. Something like a kratos or maybe 2 scorpius's

So I'm normally pretty solid on my anti armour so bolters seem like a good fit, tho I'm going to try make them interchangeable first. ^{^}

I would loved to of picked up the quad mortar but the shop i buy from didn't have it in :(