Mil+Spec Liner - Spray on bedliner products, equipment, training. We'll help you get your business started or help you add value to your existing business. Mil+Spec Liner has the fastest growing network of spray on bedliner dealers. Whether you're looking to start your spray on bedliner business or need help growing your current spray in bedliner business. Mil+Spec has a team of professionals who all come from a background or running successful spray on bedliner stores.