Does the American Defense UIC Billet work with the Aero Precision M4E1 Threaded Upper?
Lower Receiver
American Defense UIC Billet
from $37.99
Upper Receiver
Aero Precision M4E1 Threaded Upper
from $593.99
American Defense lower and Aero Precision upper compatibility
Yes, they fit
The American Defense UIC Billet works with the Aero Precision M4E1 Threaded Upper. Our compatibility rules found no conflict between them.
This exact setup has been built more than once on GunPartPicker.
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 American Defense lower and Aero Precision upper
Backed by tens of thousands of qualified builds that have both a lower and an upper.
Share of builds with the American Defense UIC Billet and any upper
- This pairAero Precision M4E1 Threaded Upper8%
Share of builds with the Aero Precision M4E1 Threaded Upper and any lower
- This pairAmerican Defense UIC Billet2%
American Defense UIC Billet
- Of lower picks
- 0.6%
- Median paid
- $38
Aero Precision M4E1 Threaded Upper
- Of upper picks
- 2.3%
- Median paid
- $594
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 American Defense lower and Aero Precision upper
The part builders pick most often in each slot alongside these two, checked against both. Parts that conflict are left out.
Charging Handle
Aero Precision Breach Small Levers
Fits both
Bolt Carrier Group
Aero Precision 5.56 BCG W/C158 Bolt
Fits both
Stock & Brace
Pistol Grip
American Defense UIC Billet vs Aero Precision M4E1 Threaded: specs and prices
| American Defense UIC Billet | Aero Precision M4E1 Threaded | |
|---|---|---|
| Best price | $37.99 at Sportsmans Outdoor Superstore | $593.99 at AR15 Discounts |
| Stores | 0 of 3 in stock | 0 of 2 in stock |
| Assembly | Stripped | Complete |
| Platform | AR-15 | AR-15 |
| Caliber | Multi | 5.56 NATO |
| Gas System Length | n/a | Mid-Length |
| Receiver Type | n/a | M4E1 |
| Length | n/a | 16 |
Both for $631.98 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
- American Defense UIC Billet: lowest $299.00 on Sep 4, highest $316.33 on Sep 25 over the last 90 days.
- Aero Precision M4E1 Threaded Upper: lowest $593.99 on Jul 5, highest $624.99 on Jul 14 over the last 90 days.
Upper Receivers frequently paired with the American Defense UIC Billet
Most picked next to it in real builds. Only parts our rules say fit the American Defense UIC Billet are listed.
Lower Receivers frequently paired with the Aero Precision M4E1 Threaded Upper
Most picked next to it in real builds. Only parts our rules say fit the Aero Precision M4E1 Threaded Upper are listed.
