Black Rain Ordnance BLACK RAIN Upper Receiver .223 REM

This is a milled AR-15 upper receiver from Black Rain Ordnance, supplied as a flat-top configuration and specified for .223 Rem / 5.56 NATO. It is presented in a black finish and listed as a milled model. The unit is intended for use by builders or technicians assembling AR-15 pattern rifles chambered for the listed calibers.

Key Specifications

• The manufacturer is Black Rain Ordnance.
• The product is listed as an Upper receiver.
• The subcategory is Upper Receivers.
• The model/type is described as Milled.
• The sight configuration is a Flat Top receiver.
• The color/finish is Black.
• The caliber is specified as .223 REM / 5.56 NATO.
• The product name is BLACK RAIN UPPER RECEIVER 223REM BLK.
• Manufacturer description emphasizes use of American metal and precision machining.

This milled upper receiver provides a precision foundation for an AR-15 build where a flat-top interface and .223 Rem / 5.56 NATO compatibility are required. Its milled construction and black finish make it suitable for builders focused on durable fitment and a clean platform for optics and accessories. Use this upper as the core component of a custom assembly or as a direct replacement where form and reliable interface are priorities.