NIKAI is a Canadian-operated brand focused on practical upgrades and accessories for sport shooting, hunting, and firearms. Based in Vancouver, British Columbia, the company develops products intended to address common equipment problems, prioritizing reliable feeding, rigidity under stress, and straightforward installation. NIKAI says its designs are prototyped and tested in-house using CNC machining and 3D printing, and that products must hold up in real use before they are sold.

Its catalogue includes accessories and components for SKS rifles, Ruger 10/22s, Remington 597s, and Mossberg shotguns. Offerings range from SKS chassis, magazine adapters, hardware kits, charging handles, and rifle modification services to shotgun followers, mini-shell adapters, recoil pads, and match savers. Customers can choose certain items as printable STL files or assembled products. The store also lists M-LOK accessories, stocks and grips, hunting accessories, and rangewear, including apparel. NIKAI provides fixed-fee services such as SKS scope drill-and-tap work, trigger jobs, and bolt-carrier bluing. The company offers free shipping on orders over $99 and accepts returns under its return policy.