Does the Harrington & Richardson Retro M16A1 work with the Harrington & Richardson Retro M16A1 20"?

Lower Receiver
Harrington & Richardson Retro M16A1 Lowers Receiver
from $159.99

Upper Receiver
Harrington & Richardson Retro M16A1 20" Upper 5.56 1:12
Harrington & Richardson lower and Harrington & Richardson upper compatibility
Yes, they fit
The Harrington & Richardson Retro M16A1 Lowers works with the Harrington & Richardson Retro M16A1 20" Upper. Our compatibility rules found no conflict between them.
No one has built this exact setup yet, but Harrington & Richardson lowers with Harrington & Richardson uppers are a common pairing.
Counted from real GunPartPicker builds: parts lists people put together while planning to buy.
Checked by the same rules the AR builder runs on every part you add: caliber, frame size, receiver pattern, thread pitch and gas length.
Fit is judged from the specs retailers list, which can be missing or wrong. Confirm with the manufacturer before you buy, and have a qualified gunsmith check any build before you fire it.
How often builders pair the Harrington & Richardson lower and Harrington & Richardson upper
Backed by tens of thousands of qualified builds that have both a lower and an upper.
Share of builds with the Harrington & Richardson Retro M16A1 and any upper
Harrington & Richardson Retro M16A1
- Of lower picks
- 0.1%
- Median paid
- $160
Harrington & Richardson Retro M16A1 20"
Not in enough builds yet to report.
How we count ⌄
These shares come from GunPartPicker's build data: real parts lists people put together while planning a purchase, not sales or surveys. A build counts a part only when it is the final pick for its slot, so parts that were swapped out never count. Fit never comes from these numbers; it comes from our compatibility rules alone.
Frequently built with the Harrington & Richardson lower and Harrington & Richardson upper
The part builders pick most often in each slot alongside these two, checked against both. Parts that conflict are left out.
Pistol Grip
Barrel

FN America FN 16 Mid-Length 5.56mm
Fits both
Muzzle Device
Bolt Carrier Group
Handguard
Stock & Brace
Suppressor
Harrington & Richardson Retro vs Harrington & Richardson Retro: specs and prices
| Harrington & Richardson | Harrington & Richardson | |
|---|---|---|
| Best price | $159.99 at Palmetto State Armory | n/a |
| Stores | 0 of 1 in stock | n/a |
| Assembly | Stripped | Complete |
| Platform | AR-15 | AR-15 |
| Caliber | 5.56 NATO | 5.56 NATO |
| Color | Gray | n/a |
| Gas System Length | n/a | Rifle |
| Length | n/a | 20 |
Today's best prices and 90 day price history
Every store we track for each part, cheapest in stock first. Prices are checked through the day.
Harrington & Richardson Retro M16A1 Lowers
- Palmetto State Armoryout of stock$159.99
Harrington & Richardson Retro M16A1 20" Upper
No store lists it today.
Price history, last 90 days
- Harrington & Richardson Retro M16A1: lowest $159.99 on Sep 4, highest $159.99 on Sep 4 over the last 90 days.
Upper Receivers frequently paired with the Harrington & Richardson Retro M16A1
Most picked next to it in real builds. Only parts our rules say fit the Harrington & Richardson Retro M16A1 are listed.
Lower Receivers most paired with Harrington & Richardson uppers
The Harrington & Richardson Retro M16A1 20" is not in enough builds yet, so these are the most picked next to any Harrington & Richardson upper. Only parts our rules say fit the Harrington & Richardson Retro M16A1 20" are listed.




















