Does the PSA PA15 MOE Lower w/ SBA5 Brace work with the CMMG MK4 .300BLK Banshee Upper Group?

Lower Receiver
PSA PA15 MOE Lower w/ SBA5 Brace

Upper Receiver
CMMG MK4 .300BLK Banshee Upper Group Receiver 8in 1-7 Twist
from $660.23
Palmetto State Armory lower and CMMG upper compatibility
Yes, they fit
The PSA PA15 MOE Lower w/ SBA5 Brace works with the CMMG MK4 .300BLK Banshee Upper Group Receiver. Our compatibility rules found no conflict between them.
This exact setup has been built more than once 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 Palmetto State Armory lower and CMMG upper
Backed by tens of thousands of qualified builds that have both a lower and an upper.
Share of builds with the PSA PA15 MOE Lower w/ SBA5 Brace and any upper
- This pairCMMG MK4 .300BLK Banshee Upper Group Receiver33%
Share of builds with the CMMG MK4 .300BLK Banshee Upper Group and any lower
- This pairPSA PA15 MOE Lower w/ SBA5 Brace15%
PSA PA15 MOE Lower w/ SBA5 Brace
- Of lower picks
- 0%
- Median paid
- n/a
CMMG MK4 .300BLK Banshee Upper Group
- Of upper picks
- 0.1%
- Median paid
- $657
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 Palmetto State Armory lower and CMMG upper
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
Suppressor
Stock & Brace
Pistol Grip
PSA PA15 MOE Lower w/ SBA5 vs CMMG MK4 .300BLK Banshee Upper: specs and prices
| PSA PA15 MOE Lower w/ SBA5 | CMMG MK4 .300BLK Banshee | |
|---|---|---|
| Best price | n/a | $789.99 at Optics Planet |
| Stores | n/a | 1 of 2 in stock |
| Assembly | Complete | Complete |
| Platform | AR-15 | AR-15 |
| Caliber | Multi | 300 Blackout |
| Trigger Pin | .154 | n/a |
| Finish | Hardcoat Anodized | n/a |
| Color | Black | n/a |
| Length | n/a | 8 |
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
- CMMG MK4 .300BLK Banshee Upper Group: lowest $660.23 on Jul 5, highest $789.99 on Jul 12 over the last 90 days.
Upper Receivers frequently paired with the PSA PA15 MOE Lower w/ SBA5 Brace
Most picked next to it in real builds. Only parts our rules say fit the PSA PA15 MOE Lower w/ SBA5 Brace are listed.
Lower Receivers frequently paired with the CMMG MK4 .300BLK Banshee Upper Group
Most picked next to it in real builds. Only parts our rules say fit the CMMG MK4 .300BLK Banshee Upper Group are listed.
















