Does the Aero Precision M4E1 Threaded Upper work with the Aero Precision 5.56 BCG W/C158 Bolt?
Upper Receiver
Aero Precision M4E1 Threaded Upper
from $593.99
Bolt Carrier Group
Aero Precision 5.56 BCG W/C158 Bolt
from $148.99
Aero Precision upper and Aero Precision bolt carrier group compatibility
Yes, they fit
The Aero Precision M4E1 Threaded Upper works with the Aero Precision 5.56 BCG W/C158 Bolt. Our compatibility rules found no conflict between them.
This exact setup has been built dozens of times 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 Aero Precision upper and Aero Precision 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 M4E1 Threaded Upper and any bolt carrier group
- This pairAero Precision 5.56 BCG W/C158 Bolt19%
- Wilson Combat .308 Win Bolt CarrierDoes not fit6%
Share of builds with the Aero Precision 5.56 BCG W/C158 Bolt and any upper
- This pairAero Precision M4E1 Threaded Upper6%
Aero Precision M4E1 Threaded Upper
- Of upper picks
- 2.3%
- Median paid
- $594
Aero Precision 5.56 BCG W/C158 Bolt
- Of bolt carrier group picks
- 8.4%
- Median paid
- $132
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 Aero Precision 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
Gas Block
Stock & Brace
Pistol Grip
Barrel
Aero Precision M4E1 Threaded vs Aero Precision 5.56 BCG W/C158: specs and prices
| Aero Precision M4E1 Threaded | Aero Precision 5.56 BCG | |
|---|---|---|
| Best price | $593.99 at AR15 Discounts | $148.99 at KY Gun Company |
| Stores | 0 of 2 in stock | 0 of 6 in stock |
| Assembly | Complete | n/a |
| Platform | AR-15 | n/a |
| Gas System Length | Mid-Length | n/a |
| Caliber | 5.56 NATO | n/a |
| Receiver Type | M4E1 | n/a |
| Length | 16 | n/a |
| Cartridge | n/a | 5.56 NATO |
| Finish | n/a | Black |
Both for $742.98 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.
Aero Precision M4E1 Threaded Upper
Price history, 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.
- Aero Precision 5.56 BCG W/C158 Bolt: lowest $131.53 on Jul 6, highest $149.99 on Jul 12 over the last 90 days.
Bolt Carrier Groups 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.
Upper Receivers frequently paired with the Aero Precision 5.56 BCG W/C158 Bolt
Most picked next to it in real builds. Only parts our rules say fit the Aero Precision 5.56 BCG W/C158 Bolt are listed.
