#1 Never take legal advice from the internet. Especially about guns. The penalty for getting the wrong information can be very heavy. No one here would deliberately give you bad advice but the laws on guns from state to state are very different and it is hard to know the laws from one state let alone multiple states.



Now having said that I shall proceed to dispense legal advice to you. I am NOT a lawyer. I am a random idiot posting on a forum full of gun nuts. Nothing more.



#2 Lawyers are expensive and I don't think you need one for these questions.



#3 Ask this question at your local gun store. They have to know FL gun laws because they work with them every day all day. Then get on the phone and ask the same question of a CO gun store. [ Google " Gun Stores near where the gun is for the phone number. ] They know CO laws like the FL gun shop knows FL laws.



#4 I do not know how you will get from FL to CO and back, Plane, train, or automobile. Assuming what you want to do is lawful and you will be traveling by car you will also want to pick up a lockable case for your new shotgun. You may be traveling through states where what you want to do is NOT lawful. There is a federal law that will allow you to lawfully travel through these states, but the gun has to be in a locked compartment, unloaded, and completely separate from any ammo. [ Which just for grins and giggles should also be in a separate locked case. [ This shows complete compliance in case you get a highly motivated cop who does not like citizens having guns. ]



#5 I do not know FL or CO laws on this but, in my state private transfers of long guns do not require the sale to be processed through an FFL. [ Gun Store ] However there is NO WAY IN HELL I would purchase any gun from any private person I do not know as a close [ and I mean really close ] family member with out going through an FFL.



Odds are the person selling the gun is fully legit. Just some Joe or Jane selling something they no loner need or want. But the possibility exists that the gun is hot. Stolen or used in a crime or owned by someone who can not lawfully own a gun. If that is the case now you are now an accessory after the fact to what ever laws were broken, you can be charged as such and could loose your gun rights forever.



Doing the transfer through an FFL eliminates all possibility of any criminal liability for you. It is iron clad proof of your intent to obey the law. It is proof that you are buying a lawful firearm, that it is lawful for you to own a fire arm, that the person selling the fire arm owns it lawfully. It is a CYA [ Cover Your Ass ] guaranteed by the ATF. Well worth the $35.00 or so it will cost to run the gun through the NCIS.



#6 What ever the outcome of your questions, OBEY THE LAWS of both states. Even if they are unconstitutional and hateful to you. OBEY THEM!



Now I have a question for you. If you intend to purchase this gun from an FFL in CO why not buy it from a FL gun store? [ sniff, sniff ]