Does the PSA Lower 300BO work with the WMD Guns Upper 300 Blackout Match-Grade?
Lower Receiver
PSA Lower 300BO
from $249.99
Upper Receiver
WMD Guns Upper 300 Blackout Match-Grade 16" Barrel NIB-X
from $539.10
Palmetto State Armory lower and WMD Guns upper compatibility
Yes, they fit
The PSA Lower 300BO works with the WMD Guns Upper 300 Blackout Match-Grade 16". 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 WMD Guns 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 pairWMD Guns Upper 300 Blackout Match-Grade 16"14%
PSA Lower 300BO
- Of lower picks
- 0%
- Median paid
- $250
WMD Guns Upper 300 Blackout Match-Grade
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 WMD Guns 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 WMD Guns Upper 300 Blackout: specs and prices
| PSA Lower 300BO | WMD Guns Upper 300 Blackout | |
|---|---|---|
| Best price | $249.99 at Palmetto State Armory | $555.99 at Optics Planet |
| Stores | 1 of 1 in stock | 1 of 2 in stock |
| Assembly | Complete | Complete |
| Platform | AR-15 | AR-15 |
| Caliber | 300 Blackout | 300 Blackout |
| Trigger Pin | .154 | n/a |
| Color | OD Green | n/a |
| Length | n/a | 16 |
Both for $805.98 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.
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.
- WMD Guns Upper 300 Blackout Match-Grade: lowest $539.10 on Jul 11, highest $555.99 on Jul 10 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 WMD Guns uppers
The WMD Guns Upper 300 Blackout Match-Grade is not in enough builds yet, so these are the most picked next to any WMD Guns upper. Only parts our rules say fit the WMD Guns Upper 300 Blackout Match-Grade are listed.
