If I was you, I'd approach your local gun/military shop and ask them to sell items for you. I sold my guitar in a similar fashion. You'd maybe need to do some market research as to what you likely be a good draw line item. The benefit is that the punter can feel your product in an environment they trust, is established and knows what they are talking about. You can give them the 411 of the item.
They will likely charge a commission/seller fee, but as you name the price they will sell at, you have control over profit. If you calculate what your supply price will be, what you will ask for it, then their seller fee in %, you can gauge how much you will make profit, but you have few overheads and get the full benefit of a shop doing all the work plus their customer base.
You will likely not even sell a unit a month at the start, realistically.. so this is a great option as you can make a little money, let someone do all the work in return for what would be the cheapest overhead to you.
Remember, unless you are going to sell on eBay, your website (that must have secure on-line payment) will cost you over 1k alone. Try to sell how easy it is to sell one item first, and then go from there.