What Inside The Package [Airsoft - H&K USP Electric (AEP)] (plus: personal comment, maybe)

What is stated in the package on the web sites from the airsoft store:

• Gun
• Magazine
• Battery: 7.2v 500mAh NiMH Micro AEP Type (Battery and charger sold separately) 

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What actually in the Package:

• Gun
• Magazine 
• Speed Loader
• Cleaning Rod
• Manual
• What to do Paper when the airsoft gun have troubleshooting 

What is not included but necessary:

• Airsoft BBS
• Battery: 7.2v 500mAh NiMH Micro AEP
• 7.2v 500mAh NiMH Micro AEP Charger

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What is not stated in the Manual:

• how to release the gun magazine. It only show where the gun magazine come out and where you put it back. It never show where the "release" trigger is. For airsoft beginner and/or non (real) gun owner, this could be an issue for people who actually read the manual.
• Here a Picture of How (since the manual never show it)