Does the Yankee Hill Machine .223 Rem/5.56 Billet work with the Aero Precision EPC-9 Threaded 11\" 9mm?

Lower Receiver
Yankee Hill Machine .223 Rem/5.56 Billet
from $245.75

Upper Receiver
Aero Precision EPC-9 Threaded 11\" 9mm
from $494.99
Yankee Hill Machine lower and Aero Precision upper compatibility
They fit, with a catch
The Yankee Hill Machine .223 Rem/5.56 Billet works with the Aero Precision EPC-9 Threaded 11\" 9mm, with one thing to check: Lower Receiver (5.56 NATO) needs a 9mm magazine well adapter for a PCC/9mm build.
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 Yankee Hill Machine 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 Yankee Hill Machine .223 Rem/5.56 Billet and any upper
- This pairAero Precision EPC-9 Threaded 11\" 9mm1%
Share of builds with the Aero Precision EPC-9 Threaded 11\" 9mm and any lower
- This pairYankee Hill Machine .223 Rem/5.56 Billet14%
Yankee Hill Machine .223 Rem/5.56 Billet
- Of lower picks
- 0.6%
- Median paid
- $246
Aero Precision EPC-9 Threaded 11\" 9mm
- Of upper picks
- 0%
- Median paid
- $445
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 Yankee Hill Machine 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.
Yankee Hill Machine .223 vs Aero Precision EPC-9 Threaded: specs and prices
| Yankee Hill Machine .223 | Aero Precision EPC-9 | |
|---|---|---|
| Best price | $251.09 at Guns.com | $494.99 at Optics Planet |
| Stores | 1 of 4 in stock | 0 of 1 in stock |
| Assembly | Stripped | Complete |
| Platform | AR-15 | AR-9 |
| Caliber | 5.56 NATO | 9mm |
| Trigger Pin | .154 | n/a |
| Finish | Hardcoat Anodized | n/a |
| Color | Black | n/a |
| Receiver Type | n/a | A4 |
| Length | n/a | 11 |
Both for $746.08 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
- Yankee Hill Machine .223 Rem/5.56 Billet: lowest $245.75 on Jul 11, highest $310.75 on Jul 21 over the last 90 days.
- Aero Precision EPC-9 Threaded 11\" 9mm: lowest $470.24 on Jul 5, highest $494.99 on Jul 12 over the last 90 days.
Upper Receivers frequently paired with the Yankee Hill Machine .223 Rem/5.56 Billet
Most picked next to it in real builds. Only parts our rules say fit the Yankee Hill Machine .223 Rem/5.56 Billet are listed.
Lower Receivers frequently paired with the Aero Precision EPC-9 Threaded 11\" 9mm
Most picked next to it in real builds. Only parts our rules say fit the Aero Precision EPC-9 Threaded 11\" 9mm are listed.

















