Buy and sell as many as you want as often as you want as long as the purpose of each C&R transaction is enhancing your collection. I bought mass quantities from Century, kept what I wanted and sold off the rest at a profit used to buy more C&Rs. The result after 22 years is about $34,000 worth of guns at a net cost (neglecting overhead, etc.) of zero.
Originally Posted by truckman
How many other hobbies pay for themselves?
211 BC: I swear by Jupiter Optimus Maximus .... in the army of the consul Gnaeus Fulvius Centumalus Maximus and for 10 miles around it I will not steal anything worth more than a denarius in any one day.
2016 AD: To enhance our community's aggregate through multi-platform metrics of media synergy catalyzing integrated outcomes of macro-disciplines toward inclusive methodology paradigms generating positive algorithms of unwavering commitment to our children, the flag, and God.