Does the Alexander Arms 16" Upper KIT 6.5 Grendel work with the Aero Precision 5.56 BCG W/C158 Bolt?
Upper Receiver
Alexander Arms 16" Upper KIT 6.5 Grendel 1:8
from $597.71
Bolt Carrier Group
Aero Precision 5.56 BCG W/C158 Bolt
from $148.99
Alexander Arms upper and Aero Precision bolt carrier group compatibility
They fit, with a catch
The Alexander Arms 16" Upper KIT 6.5 Grendel 1:8 works with the Aero Precision 5.56 BCG W/C158 Bolt, with one thing to check: Bolt Carrier Group (5.56 NATO) has a 5.56 / .223 bolt; a 6.5 Grendel build needs a 6.5 Grendel / 6mm ARC bolt.
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.
Alexander Arms 16" Upper KIT vs Aero Precision 5.56 BCG W/C158: specs and prices
| Alexander Arms 16" Upper KIT | Aero Precision 5.56 BCG | |
|---|---|---|
| Best price | $597.71 at KY Gun Company | $148.99 at KY Gun Company |
| Stores | 2 of 4 in stock | 0 of 6 in stock |
| Assembly | Complete | n/a |
| Platform | AR-15 | n/a |
| Caliber | 6.5 Grendel | n/a |
| Length | 16 | n/a |
| Cartridge | n/a | 5.56 NATO |
| Finish | n/a | Black |
Both for $746.70 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.
Alexander Arms 16" Upper KIT 6.5 Grendel 1:8
Price history, last 90 days
- Alexander Arms 16" Upper KIT 6.5 Grendel: lowest $597.71 on Aug 9, highest $694.99 on Jul 5 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.