http://www.dakkadakka.com/dakkaforum/posts/list/15.page JForum - http://www.jforum.net
He based his claim on page 44 of the BGB.]]> http://www.dakkadakka.com/dakkaforum/posts/preList/207864/245398.page http://www.dakkadakka.com/dakkaforum/posts/preList/207864/245398.page GMT locked.

And as per the very page your opponent pointed out, locked units cannot be targeted normally.]]> http://www.dakkadakka.com/dakkaforum/posts/preList/207864/245413.page http://www.dakkadakka.com/dakkaforum/posts/preList/207864/245413.page GMT
In fourth edition the term kill zone has been removed and is replaced by the term "engaged" moreover the entire unit with atleast one engaged model is considered "locked", thus if even one model in a unit is in BtB with an oponent then the whole unit is considered locked but only models within 2" of that model are considered engaged (in the kill zone).

Looking at the shooting phase rules for choosing a target I cant seem to find any rules for what targets may not be chosen as targets, the section of target priority however states that you may automatically ignore units you may not shoot at as for example units with all models engaged in CC.

Aparently your friend was not using this passage.

After that LOS rules start and as far as I can see being allowed to target locked/engaged models are not covered there, just that locked models are considered to block LOS.

Thus, I jump to CC rules.
And finally I found the rule. page 44, Shooting into & out of CC, really should have simply gone to page 44 as listed in your post at once

You may not directly target any model locked in CC, the only way to cause "shooting" casualties in a unit locked in CC is to shoot a template weapon at a target close by and have that template weapon scatter into the locked/engaged models.

It seems like your friend has missunderstood the terminology of engaged/locked and mixed in flashbacks from 3rd edition.

The term killzone is not used in the 4th edition rules and just like you belive once a single model becomes engaged (a feet that is only possible in 1 model units but...) then the whole unit becomes locked and can not be directly targeted for shooting.

Remember here that while only a small portion of a unit may be engaged all models in the unit are locked even those that are also engaged.]]> http://www.dakkadakka.com/dakkaforum/posts/preList/207864/245435.page http://www.dakkadakka.com/dakkaforum/posts/preList/207864/245435.page GMT
Additionally, the whole mass of models friend and foe also block line of sight for shooting purposes of other units.]]> http://www.dakkadakka.com/dakkaforum/posts/preList/207864/245459.page http://www.dakkadakka.com/dakkaforum/posts/preList/207864/245459.page GMT
Engaged models are only those within 2" of a model in BtB with an oponent model.
Engaged models fight in close combat and thus can kill and be killed.

If even one model in the unit is engaged then the whole unit is locked, a unit that is locked in combat blocks LOS and man not be chosen as a ranged fire target, you may not even place a template or blast marker so that it even partially covers a locked model.

I know Im a bit of a stickler here but its important to separate the terminology as a bluring of it will cause problems for you, if you for example claim an entire unit is engaged a person can pick upp the rulebook and point out that only models within 2" of a BtB model are considered engaged and thus this would allow... well whatever.]]> http://www.dakkadakka.com/dakkaforum/posts/preList/207864/245464.page http://www.dakkadakka.com/dakkaforum/posts/preList/207864/245464.page GMT
I got muddled up typed the wrong one. ]]> http://www.dakkadakka.com/dakkaforum/posts/preList/207864/245469.page http://www.dakkadakka.com/dakkaforum/posts/preList/207864/245469.page GMT http://www.dakkadakka.com/dakkaforum/posts/preList/207864/245897.page http://www.dakkadakka.com/dakkaforum/posts/preList/207864/245897.page GMT