Rifle Configurator is a free AR-15 builder and gun builder tool designed to help you plan your custom rifle build. Whether you're assembling your first AR-15 build kit or fine-tuning a precision setup, our platform provides real-time compatibility verification across 70+ platforms.

Browse our extensive catalog of AR-15 parts and rifle parts, including uppers, lowers, AR-15 handguards, AR-15 triggers, and barrel assemblies. Our compatibility engine ensures every component you select works together, eliminating guesswork from your custom AR-15 project.

Planning to build your own AR-15? Start with our mission-first configurator that matches components to your intended use case, from home defense to precision shooting.