Does the Aero Precision M4E1 Stripped work with the Harrington & Richardson Retro M16A1 20"?
Lower Receiver
Aero Precision M4E1 Stripped
from $91.14
Upper Receiver
Harrington & Richardson Retro M16A1 20" Upper 5.56 1:7 Rifle
from $649.99
Aero Precision lower and Harrington & Richardson upper compatibility
Yes, they fit
The Aero Precision M4E1 Stripped works with the Harrington & Richardson Retro M16A1 20" Upper. Our compatibility rules found no conflict between them.
This exact setup is in a real GunPartPicker build.
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 Aero Precision 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 Aero Precision M4E1 Stripped and any upper
- Aero Precision M5E1 Enhanced 20\" .308 CMVDoes not fit8%
Share of builds with the Harrington & Richardson Retro M16A1 20" and any lower
- This pairAero Precision M4E1 Stripped11%
Aero Precision M4E1 Stripped
- Of lower picks
- 0.1%
- Median paid
- $116
Harrington & Richardson Retro M16A1 20"
- Of upper picks
- 0.1%
- Median paid
- $650
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 Aero Precision 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.
Bolt Carrier Group
Fits both
Pistol Grip
Charging Handle
Radian Raptor & Talon Safety Selector Combo
Unconfirmed
Gas Block
Barrel
Aero Precision 5.56 Mid-Length
Fits both
Stock & Brace
Aero Precision M4E1 Stripped vs Harrington & Richardson Retro: specs and prices
| Aero Precision M4E1 Stripped | Harrington & Richardson | |
|---|---|---|
| Best price | $91.14 at BattleHawk Armory | $649.99 at Palmetto State Armory |
| Stores | 0 of 1 in stock | 1 of 1 in stock |
| Assembly | Stripped | Complete |
| Platform | AR-10 | AR-15 |
| Trigger Pin | .154 | n/a |
| Finish | Hardcoat Anodized | n/a |
| Gas System Length | n/a | Rifle |
| Caliber | n/a | 5.56 NATO |
| Length | n/a | 7 |
| Weight | 8.6 | n/a |
Both for $741.13 at today's best prices.
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.
Price history, last 90 days
- Aero Precision M4E1 Stripped: lowest $91.14 on Jul 12, highest $129.99 on Jul 5 over the last 90 days.
- Harrington & Richardson Retro M16A1 20": lowest $649.99 on Jul 14, highest $649.99 on Jul 14 over the last 90 days.
Upper Receivers frequently paired with the Aero Precision M4E1 Stripped
Most picked next to it in real builds. Only parts our rules say fit the Aero Precision M4E1 Stripped are listed.
Lower Receivers frequently paired with the Harrington & Richardson Retro M16A1 20"
Most picked next to it in real builds. Only parts our rules say fit the Harrington & Richardson Retro M16A1 20" are listed.
