ABC RIFLE COMPANY AR-15 Sleek Billet Stripped Upper Receiver Black. The flat-top design features integrated Picatinny rails making it easy to mount optics and accessories. M4 feed ramps are included to ensure smooth and consistent feeding. With no forward assist the slick side profile offers a clean lightweight look ideal for modern builds. Finished with a tough hardcoat anodizing this upper is perfect for creating a custom streamlined AR platform. Specifications for ABC RIFLE COMPANY AR-15 Sleek Billet Stripped Upper Receiver: Manufacturer: ABC RIFLE COMPANY Fabric/Material: 6061-T6 Aluminum Gun Make: AR Platform Gun Model: AR-15 Weight: 8 oz Package Contents: ABC RIFLE COMPANY AR-15 Sleek Billet Stripped Upper Receiver What firearm models does the manufacturer say ABC RIFLE COMPANY AR-15 Sleek Billet Stripped Upper Receiver is compatible with? The manufacturer says that ABC RIFLE COMPANY AR-15 Sleek Billet Stripped Upper Receiver is compatible with AR-15ABC RIFLE COMPANY UP15-BILLET: AR-15 Sleek Billet Stripped Upper Receiver Black