Add the APF Armory M16 Bolt Carrier Group SP4 5.56/223/300 BLK Blue Steel to your setup — practical, well-made, and ready for real use.

APF SP4-coated BCGs Machined to Military Specifications & Made in the USA Alex Pro Firearms (APF) is proud to introduce BCGs featuring SP4 a hybrid DLC (Diamond Like Carbon) coating that is the result of over a year in development.

In stock and ready to ship from Dawson Defense, an Arizona-owned licensed dealer.