USA Gun Shop is an online firearms marketplace and information resource focused on helping customers compare products, find deals, and make informed purchasing decisions. Its catalog covers handguns, rifles, shotguns, ammunition, firearm parts, accessories, tactical gear, scopes and sights, bows, and crossbows. The site features new and used firearms, including police trade-ins and military surplus listings sourced from licensed dealers.

A central feature is its gun price comparison service, which searches more than 200 retailers and indexes over 100,000 products, with live price tracking and no account required. Shoppers can browse by category, caliber, brand, or popular item, and find offers on firearms, ammunition, parts, and accessories. The site also provides bulk ammunition search options and a used-gun marketplace with frequently updated inventory.

Beyond shopping, USA Gun Shop publishes firearm reviews, head-to-head comparisons, buying guides, industry news, and stories about historically notable firearms. Its stated aim is to combine selection, value, price transparency, and knowledgeable service in one destination for firearm shoppers.