How does a harpoon gun transfer? FFL?

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MCX SPEAR-LT 5.56 COY/BLK 16 - Freedom Outdoors

How to Become a Firearms Dealer - AT3 Tactical

What is a general profit margin for firearm dealers and gun stores? I'm thinking about getting my FFL. Without talking of specific distributors, what are the wholesale prices for guns like the

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EAA Handguns $419.00- $715.00 Shipped, Email For Price Available

Ask an LGS Anything: Sig MCX Spear : r/CTguns

Caraibe spear gun is 32 long. Needs new bands.

Sold at Auction: Kodiak Manufacturing The Ahab Harpoon Gun