HQ Gun is an online retailer serving customers interested in shooting, hunting, ammunition, and personal defense. Its broad catalog brings together firearm accessories, outdoor equipment, and related supplies, with product categories organized to help shoppers browse by use and type. The selection includes handgun, rifle, and shotgun ammunition; magazines; speed loaders; and equipment for reloading. Customers can also find air guns and accessories, including pellets and CO2 cartridges.

For optics and aiming, HQ Gun offers scopes, binoculars, night vision and thermal products, rangefinders, red dot sights, mounts, lights, lasers, and targets. Its tactical and duty gear includes holsters, pouches, slings, grips, stocks, bipods, gun cases, safes, and security products. The store also carries survival and camping supplies, knives and tools, non-lethal defense products, protective equipment, training gear, clothing, and accessories such as belts and gloves. Featured listings include magazine loaders, speedloaders, firearm sights, and slings from brands such as ADCO, AmeriGlo, and Blue Force Gear. The website requires visitors to be at least 21 years old.