The GunLink Blog covers industry updates, SHOT Show, Second Amendment activism, firearms laws, product news and reviews, humor and much more. The original heart of GunLink, the GunLink Directory contains listings to businesses in firearms and related industries. Links to guns. GunLink. If you're looking for a business, the directory is searchable by keyword or you can browse listings alphabetically or by category and filter by location. To find GunLink branded gear and Second Amendment themed items.