RESIDENT EVIL 2 the Samurai Gun model Chriss and Claire DLC reserve

If you can not preorder a game please contact xbox support:

1. Go to
http://support.xbox.com/contact-us

2. Click "Games"

3. Click "See Other Options"

4. Click "Preorders"

5. Click "Show contact options"

6. Click "Chat with Xbox Support" or "Request Callback"

Also, make sure your billing info is up to date here:
https://commerce.microsoft.com/PaymentHub/Profile

there's no info about it yet, they may sell it separately in the future.

Give it some time. I'd bet they'll sell them in the future.

Unfortunately of you missed the pre order promotion there is nothing you can do, They don't honour them after the fact.

You can also check any additional content outside of the game from the manage games tab