If in Spain they may have some very real export/import issues that present a problem for them, but if it's GamoUSA it seems kind of ridiculous. Here in the US we can buy air gun parts from at least a dozen US-based companies. Those transactions happen everyday with no legal problems at all.
Safe and Happy Shooting!
Ed Krzynowek, The Airgun Tune-Meister
"We can rebuild the squirrel. Make him stronger, faster...We have the technology"---Skyler M.