Does the Aero Precision EPC-9 Threaded 11\" 9mm work with the Stern Defense Nickel Boron 9mm?
Upper Receiver
Aero Precision EPC-9 Threaded 11\" 9mm
from $494.99
Bolt Carrier Group
Stern Defense Nickel Boron 9mm
from $169.99
Aero Precision upper and Stern Defense bolt carrier group compatibility
Yes, they fit
The Aero Precision EPC-9 Threaded 11\" 9mm works with the Stern Defense Nickel Boron 9mm. 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 upper and Stern Defense bolt carrier group
Backed by thousands of qualified builds that have both an upper and a bolt carrier group.
Share of builds with the Aero Precision EPC-9 Threaded 11\" 9mm and any bolt carrier group
- FailZero AR950%
- This pairStern Defense Nickel Boron 9mm17%
- Spike's Tactical 5.56 NATO Cut LightweightDoes not fit17%
Share of builds with the Stern Defense Nickel Boron 9mm and any upper
- This pairAero Precision EPC-9 Threaded 11\" 9mm6%
Aero Precision EPC-9 Threaded 11\" 9mm
- Of upper picks
- 0%
- Median paid
- $445
Stern Defense Nickel Boron 9mm
- Of bolt carrier group picks
- 0.2%
- Median paid
- $170
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 upper and Stern Defense bolt carrier group
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
Lower Receiver
Pistol Grip
Suppressor
Handguard
Aero Precision EPC-9 Threaded vs Stern Defense Nickel Boron 9mm: specs and prices
| Aero Precision EPC-9 | Stern Defense Nickel Boron | |
|---|---|---|
| Best price | $494.99 at Optics Planet | $169.99 at Optics Planet |
| Stores | 0 of 1 in stock | 3 of 4 in stock |
| Assembly | Complete | n/a |
| Platform | AR-9 | n/a |
| Caliber | 9mm | n/a |
| Receiver Type | A4 | n/a |
| Length | 11 | n/a |
| Cartridge | n/a | 9mm |
| Finish | n/a | Nickel Boron |
Both for $664.98 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
- Aero Precision EPC-9 Threaded 11\" 9mm: lowest $470.24 on Jul 5, highest $494.99 on Jul 12 over the last 90 days.
- Stern Defense Nickel Boron 9mm: lowest $144.49 on Jul 5, highest $170.99 on Jul 24 over the last 90 days.
Bolt Carrier Groups 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.
Upper Receivers frequently paired with the Stern Defense Nickel Boron 9mm
Most picked next to it in real builds. Only parts our rules say fit the Stern Defense Nickel Boron 9mm are listed.
