Harrington & Richardson Retro M16A1 20" AR-15 Upper 5.56 1:12 Rifle Length, Black
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Harrington & Richardson
Overview
The Harrington & Richardson Retro M16A1 Upper is a complete assembly designed for the AR-15 platform, featuring a 20-inch barrel optimized for 5.56 NATO ammunition. With a rifle-length gas system and a twist rate of 1:12, this upper receiver delivers reliable cycling and performance tailored for standard velocity loads, making it ideal for precision shooting and vintage-style builds. Commonly found in retro military-inspired configurations, this upper adds authenticity and functionality to your AR-15 project.
Specifications
Harrington & Richardson Retro M16A1 20" AR-15 Upper 5.56 1:12 Rifle Length, Black
Available Merchants(1)
Frequently Built With
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 M4e1 Complete Lower Receiver W/moe Sl Grip & Sl-S Carbine Stock
Lower Receiver
Magpul AFG-2 Angled Fore Grip - Black
Foregrip
Radian Raptor Charging Handle & Talon Safety Selector Combo - Od Green
Charging Handle
Wilson Combat Ar-15 Lo-Profile Gas Block .750" Black
Gas BlockBuild Configuration Breakdown
Aggregated and anonymized data showing how builders use this product
PlatformBased on real build data showing which platform (AR-15, AR-10, AR-9) builders pair with this product.
CaliberBased on real build data showing which calibers builders choose alongside this product.
Gas SystemBased on real build data showing which gas system lengths builders use with this product.
| Product | Category | Times Built Together |
|---|---|---|
| BLEM PSA AR15 Complete Classic Stealth Lower, Black | Lower Receiver | 360 |
| Battle Arms Development Rack Ambidextrous Ar-15 Charging Handle - Mod C | Charging Handle | 260 |
| Aero Precision M4e1 Complete Lower Receiver W/moe Sl Grip & Sl-S Carbine Stock | Lower Receiver | 231 |
| Magpul AFG-2 Angled Fore Grip - Black | Foregrip | 166 |
| Radian Raptor Charging Handle & Talon Safety Selector Combo - Od Green | Charging Handle | 161 |
| Wilson Combat Ar-15 Lo-Profile Gas Block .750" Black | Gas Block | 143 |
| Platform | Percentage |
|---|---|
| AR-15 | 100% |
| Caliber | Percentage |
|---|---|
| 5.56 NATO | 100% |
| Gas System | Percentage |
|---|---|
| Rifle | 100% |
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