[Gradius123]

Where is the weapon structure rating table?  I couldn't find it in any of the books.  Did the developers forget to print it? 

How long does it take to wake up from being knocked out.  It wasn't mentioned in the Knockout Blow edge action description. 

[Xenon]

Hi Gradius123
Welcome to the forums! :-)

Where is the weapon structure rating table? 

Not sure what you are asking for here. Don't think i've seen such table in any edition of Shadowrun.

In what book and at what page does it mention that there is/should be one?
What are you planning to use it for?

How long does it take to wake up from being knocked out. 

It fill out your stun condition monitor. You wake up when your stun condition monitor is no longer filled up.

This typically take 1 Hour (as long as you don't get any external help, Stun damage can also be healed via First Aid, Medkit and Magic).

To heal Stun Damage, roll Body + Willpower once per hour. Each hit heals a box of Stun Damage after that hour of rest.

[Stainless Steel Devil Rat]

SR has never modeled damaging objects very well.  The closest analogue is the barrier mechanic.

Guns are primarily made of metal, but are somewhat mechanically delicate.  So  relatively hard to damage, but it doesn't take much damage to cause their mechanical function to stop.  Or course if you want to utterly obliterate a gun, then it'd be as resilient as a chunk of metal of equal mass.

[Gradius123]

Hi Gradius123
Welcome to the forums! :-)

Where is the weapon structure rating table? 

Not sure what you are asking for here. Don't think i've seen such table in any edition of Shadowrun.

In what book and at what page does it mention that there is/should be one?
What are you planning to use it for?

Thank you very much for the welcome!  I found this in the 6E book, "Firing Squad" on page 93 for the Edge Action, Called Shot: Break Weapon.  It reads:

Called Shot:
Break Weapon
(Any Attack)

If you can’t disarm your opponent, or you just want to show off, you can direct your attack against your opponent’s weapon to disable it. The Attack roll is the similar to breaking through barriers (p. 111, SR6). If the modified DV exceeds half of the Structure rating for the weapon (see Weapon Structure Ratings table) corresponding to the weapon, the Attack Rating of the weapon is reduced by 1 permanently in all range categories. If the DV exceeds the Structure rating, reduce the Attack Rating by the difference between DV and the Structure rating. If the Attack Rating is reduced to 0 in a range category, the weapon cannot be used at that distance (p. 109, SR6). If there is no Attack Rating available in any range category, it’s time to buy a new one, as this one’s busted. Cost: 5 Edge

Personally, I wouldn't bother with this Edge Action because it's cheaper to just use Knockout Blow instead (a 2-Edge Action).

[Xenon]

Yer correct, it seem to be missing from Firing Squad.
Odds are it will be largely be based upon standard structure ratings.
Perhaps with higher structure to heavy metal melee weapons such as claymores and lower structure for less robust high tech sniper rifles...

[Gradius123]

Gotcha!  And thanks for helping clarify recovering from Knockout!