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Yankee Hill Machine
Overview
The Yankee Hill Machine A3 AR-15 Upper Receiver Assembly is a stripped upper designed for builders looking to create a customized platform. Crafted from 7075-T6 aluminum, this A3 receiver offers a lightweight yet durable structure essential for reliable performance. It is compatible with standard AR-15 components and is commonly used in builds featuring a rifle gas system chambered in 5.56 NATO.
Based on build data

BLEM PSA AR15 Complete Classic Stealth Lower, Black
Lower Receiver
Battle Arms Development Rack Ambidextrous Ar-15 Charging Handle - Mod C
Charging Handle
Aero Precision Stripped M4e1 Ar-15 Lower Receiver - Special Edition - Freedom

Yankee Hill Machine Ar-15 Charging Handle
Charging Handle
Aero Precision Ar-15 Breach Charging Handle Ambidextrous Small Levers

Wilson Combat Ar-15 Lo-Profile Gas Block .750" Black
Gas BlockAggregated and anonymized data showing how builders use this product
| Product | Category | Times Built Together |
|---|---|---|
| BLEM PSA AR15 Complete Classic Stealth Lower, Black | Lower Receiver | 12 |
| Battle Arms Development Rack Ambidextrous Ar-15 Charging Handle - Mod C | Charging Handle | 9 |
| Aero Precision Stripped M4e1 Ar-15 Lower Receiver - Special Edition - Freedom | 8 | |
| Yankee Hill Machine Ar-15 Charging Handle | Charging Handle | 7 |
| Aero Precision Ar-15 Breach Charging Handle Ambidextrous Small Levers | 7 | |
| Wilson Combat Ar-15 Lo-Profile Gas Block .750" Black | Gas Block | 7 |
| Platform | Percentage |
|---|---|
| AR-15 | 100% |
| Caliber | Percentage |
|---|---|
| 5.56 NATO | 55.6% |
| .223 Wylde | 18.5% |
| .308 Win | 7.4% |
| .450 Bushmaster | 7.4% |
| 300 Blackout | 7.4% |
| 9mm | 3.7% |
| Gas System | Percentage |
|---|---|
| Carbine | 40% |
| Rifle | 28% |
| Mid-Length | 16% |
| Pistol | 12% |
| Blowback | 4% |
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