Does the PSA Lower 300BO work with the PSA 7.5" 300AAC Blackout Nitride 6"?
Lower Receiver
PSA Lower 300BO
from $249.99
Upper Receiver
PSA 7.5" 300AAC Blackout Nitride 6" Lightweight Hex M-LOK
Palmetto State Armory lower and Palmetto State Armory upper compatibility
Yes, they fit
The PSA Lower 300BO works with the PSA 7.5" 300AAC Blackout Nitride 6" Lightweight. 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 Palmetto State Armory lower and Palmetto State Armory upper
Backed by tens of thousands of qualified builds that have both a lower and an upper.
Share of builds with the PSA Lower 300BO and any upper
- This pairPSA 7.5" 300AAC Blackout Nitride 6" Lightweight14%
PSA Lower 300BO
- Of lower picks
- 0%
- Median paid
- $250
PSA 7.5" 300AAC Blackout Nitride 6"
Not in enough builds yet to report.
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 Palmetto State Armory upper
The part builders pick most often in each slot alongside these two, checked against both. Parts that conflict are left out.
Charging Handle
Fits both
Bolt Carrier Group
FAXON Firearms 5.56 Nitride TIN PVD
Fits both
Stock & Brace
Barrel
Fits both
PSA Lower 300BO vs PSA 7.5" 300AAC Blackout: specs and prices
| PSA Lower 300BO | PSA 7.5" 300AAC Blackout | |
|---|---|---|
| Best price | $249.99 at Palmetto State Armory | n/a |
| Stores | 1 of 1 in stock | n/a |
| Assembly | Complete | Complete |
| Platform | AR-15 | AR-15 |
| Caliber | 300 Blackout | 300 Blackout |
| Trigger Pin | .154 | n/a |
| Color | OD Green | n/a |
| Gas System Length | n/a | Pistol |
| Length | n/a | 7.5 |
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.
PSA Lower 300BO
- Palmetto State Armory$249.99
PSA 7.5" 300AAC Blackout Nitride 6" Lightweight
No store lists it today.
Price history, last 90 days
- PSA Lower 300BO: lowest $237.49 on Jul 12, highest $249.99 on Jul 14 over the last 90 days.
Upper Receivers frequently paired with the PSA Lower 300BO
Most picked next to it in real builds. Only parts our rules say fit the PSA Lower 300BO are listed.
Lower Receivers most paired with Palmetto State Armory uppers
The PSA 7.5" 300AAC Blackout Nitride 6" is not in enough builds yet, so these are the most picked next to any Palmetto State Armory upper. Only parts our rules say fit the PSA 7.5" 300AAC Blackout Nitride 6" are listed.
