Originally Posted by
olm022
Provided your luggage in LAS is tagged all the way to FRA, you will see it only in Germany and it is there where customs clearance will take place. As a rule, for flights within Europe (expect for flights to Norway, Ukraine, Russia and some other countries) customs are cleared at your final destination.
In Amsterdam, you will go only through immigration, since this is your first entry into the Schengen zone.
When travelling to the countries mentioned you stay in transit and there will be no customs clearance at all (however, for Norway there will be immigration).
HOWEVER: The OP will certainly go through customs in AMS: With his handluggage. When travelling to Europe and transfering at a community airport, you go through customs twice: The first time with your hand luggage as soon as you arrive in the coumminity, the second time with your checked luggage at the final destination. With some certainty neither the first nor the second check will be really noticable.