Does the Aero Precision M4A1 Clone work with the PSA GEN4 9mm BCG?
Aero Precision lower and Palmetto State Armory bolt carrier group compatibility
They fit, with a catch
The Aero Precision M4A1 Clone works with the PSA GEN4 9mm BCG, with one thing to check: Lower Receiver (5.56 NATO) needs a 9mm magazine well adapter for a PCC/9mm build.
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.
Aero Precision M4A1 Clone vs PSA GEN4 9mm BCG: specs and prices
| Aero Precision M4A1 Clone | PSA GEN4 9mm BCG | |
|---|---|---|
| Best price | $129.99 at Brownells | n/a |
| Stores | 0 of 3 in stock | n/a |
| Assembly | Stripped | n/a |
| Platform | AR-15 | n/a |
| Caliber | 5.56 NATO | n/a |
| Trigger Pin | .154 | n/a |
| Finish | Hardcoat Anodized | Nitride |
| Color | Black | n/a |
| Cartridge | n/a | 9mm |
| Weight | 8.35 | n/a |
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 M4A1 Clone: lowest $111.87 on Aug 18, highest $129.99 on Jul 5 over the last 90 days.