LEI Firearms Inc. is a firearms retailer offering a broad selection of firearms, tactical equipment, parts, and accessories. Its online store features handguns, rifles, and shotguns, alongside ammunition, barrels, magazines, sights, optics, lasers, uppers, lowers, and other components. Customers can also browse gun-care supplies, including cleaning kits, as well as range gear such as ear and eye protection, range bags, and targets. Additional products include clothing, knives, and blades.

The company offers custom firearm builds, with listed build types including AR-15, AR-10, EPC-9, M4E1, and Glock. Its website presents available custom builds and products ready to build, and includes a gallery for viewing its work. Featured products showcase a range of firearms and brands, with product details and prices displayed in the store.

LEI Firearms provides customer information through its contact page, phone, and email, and offers resources such as online purchasing guidance, FAQs, and policy information. The brand positions its services around firearms, customization, tactical gear, hunting gear, and firearm maintenance.