Ratlings

So, everyone who ever had them (or is a big Frodo fan) will field a single unit of these guys.

Unless you are also running Psyker Battle Squads, these guys are horribad at actually doing damage to the other guy, even with BS4 sniper rifles.

Even with 10 of them, they just aren't good enough. That T2 really makes them a liability in vehicles, so don't try and be a smartass and stick 5 of them in a Chimera. When the Chimera gets popped, you'll be lucky if anyone walks away and even then--they are likely to flee immediately with that LD6.

When you are done failing with these guys, get one of the better choices. Remember that ALL of your barrage weapons cause pinning, and amazingly enough kill both infantry and tanks. Unlike these guys, who don't kill tanks.

So if you really just have to pin someone with a Psyker Battle Squad, do it with a Manticore or something. Much more dangerous.