What are you missing....Read the treaty::::
Definitions
For the purposes of this Convention, the following definitions shall apply:
1. "Illicit manufacturing" : the manufacture or assembly of firearms, ammunition, explosives, and other related materials:
b. without a license from a competent governmental authority of the State Party where the manufacture or assembly takes place;
Who will license you to hand load, or assemble you weapon after cleaning???
Not to worry we already have a government orginzation that is giving all the people in our industry fits:
http://www.progunleaders.org/DDTC/
When we ratify a treaty then we MUST pass laws to fulfill the treaty obligations..
Sleep well ladies and gentlemen your government is at work.