Dec / 13

Does Customs check every package?

                        Here is the status:
Label/Receipt Number: 
Class: Priority Mail International Parcels
Service(s): International Parcels
Status: Inbound Into Customs

Your item is being processed by United States Customs. Information, if available, is updated periodically throughout the day. Please check again later. 

Detailed Results:

Inbound Into Customs
Inbound International Arrival, December 09, 2010, 8:30 am, ISC LOS ANGELES CA (USPS)
Foreign International Dispatch, December 08, 2010, 12:34 pm, HONG KONG AIR MAIL CENTRE, HONG KONG
Origin Post is Preparing Shipment
Foreign Acceptance, December 03, 2010, 11:19 am, HONG KONG

What's inside the package is an airsoft gun, bought off from The gun has a painted orange tip and the trademarks were covered before being shipped off. 
Its been in Customs since the 9th of Dec. How longer do I need to wait in order for it to clear and be delivered? Is it normal for it to take this long? How long should I wait before I start worrying about it? I'm getting a little bit worried because I don't know if they will seize the gun but then again, its got the orange tip.