Manufactured from steel with a durable powder-coated finish, this car inventory tool features a locking nut and locking ring finish. The all-steel construction provides a 3-point functionality, and this unique tool combines all the necessary tools without having to have several types of keys. As a standard AR15/M4 combination and robust multi-tool, it is compatible with most M16, M4, and AR rifles. Finally, there is a key of armor which contains everything you need, and this unique tool combines all the tools needed to eliminate the need for multiple key types. It can be used for all M16 or AR-15 rifles and all their variants.