Harrington & Richardson Retro M16A1 20" AR-15 Upper 5.56 1:7 Rifle Length, Black
All Harrington & Richardson upper receivers4 options
Click to see full view
Harrington & Richardson
Overview
The Harrington & Richardson Retro M16A1 20" AR-15 Upper is a complete upper assembly designed for the AR-15 platform, featuring a 20-inch barrel with a 1:7 twist rate that stabilizes a variety of bullet weights, making it ideal for precision shooting. With a rifle-length gas system, this upper offers smooth cycling and reliable performance, particularly suited for builds focused on the 5.56 NATO caliber. This upper is commonly found in traditional military-style builds that emphasize accuracy and historical aesthetics.
Specifications
Harrington & Richardson Retro M16A1 20" AR-15 Upper 5.56 1:7 Rifle Length, Black
4 options
Available Merchants(1)
Prices checked
Price Alert
September 2026 on GunPartPicker
Harrington & Richardson Retro M16A1 20" AR-15 Upper 5.56 1:7 Rifle Length, Black ranked #267 of the 615 upper receivers builders added on GunPartPicker in September 2026. Builders have been adding it to their builds on GunPartPicker since March 2026. All time, it ranks #391 of the 1,683 upper receivers builders have added. Builds with this upper receiver are nearly all chambered in 5.56 NATO, nearly all on rifle-length gas, and nearly all AR-15.
Availability is good: it was in stock at one retailer or another nearly every day in September 2026, and today the one retailer we track has it in stock. Prices barely moved in September 2026, holding around $649.99, so there haven't been real sales lately. Buying today, the lowest price is $649.99 at Palmetto State Armory, which matches the best price we saw in September.
Updated · from real builds on GunPartPicker · Prices checked · refreshed daily across 37 retailers
Not sure which upper receiver to pick?
We ranked every upper receiver by how often it shows up in real builds on GunPartPicker.
Read the guide: Most Popular AR-15 Upper Receivers →Check it against the live catalog:
Frequently Built With
The part most often added in each category by the builds that include this one
Aero Precision M4E1 Stripped AR-15 Lower Receiver - Blem
TriggerTech AR-15 Mil-Spec Curved Trigger, Two Stage, 5.5lb Pull - AH0TDB55NNC
TPS Arms AR-15 Safety Selector, Black - AR1033
LBE Unlimited AR-15 Magazine Catch Assembly, Black - ARMCASY
Hogue Overmolded Beavertail Grip Rubber Black
San Tan Tactical Enhanced AR-15 Bolt Carrier Group - 5.56 - Nitride
No reviews yet. Be the first to review this product!