The Yankee Hill Machine A3 Upper Receiver Assembly is a forged aluminum stripped upper designed for AR-15 platform builds.
- Platform: AR-15
- Type: Stripped upper receiver assembly
- Material: 7075-T6 forged aluminum
- Finish: Black hard-coat anodized
- Rail: Full-length MIL-STD-1913 Picatinny
- Includes: Ejection port cover assembly, forward assist assembly
- Installation: Requires barrel assembly, BCG, charging handle, and armorer’s tools
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