Del-Ton, Inc. is an American firearms manufacturer known for producing affordable and reliable AR-15-style rifles and parts. Their Del-Ton .556 refers to AR-15-style rifles chambered in 5.56x45mm NATO, a standard military cartridge used in the M16 and M4 rifles. Del-Ton’s rifles are popular for their performance, value, and versatility, making them a good choice for both new shooters and experienced enthusiasts.

The rifles are chambered in 5.56x45mm NATO, which is interchangeable with the civilian .223 Remington round, though 5.56mm rounds typically have higher pressure and performance characteristics.