Does the PSA Lower 300BO work with the Daniel Defense M4A1 FSP FDE 5.56 NATO?
Lower Receiver
PSA Lower 300BO
from $249.99
Upper Receiver
Daniel Defense M4A1 FSP FDE 5.56 NATO 14.5" Bbl Group
from $1457.00
Palmetto State Armory lower and upper compatibility
Yes, they fit
The PSA Lower 300BO works with the Daniel Defense M4A1 FSP FDE 5.56 NATO 14.5" Bbl. Our compatibility rules found no conflict between them.
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 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
PSA Lower 300BO
- Of lower picks
- 0.2%
- Median paid
- $250
Daniel Defense M4A1 FSP FDE 5.56 NATO
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 upper
The part builders pick most often in each slot alongside these two, checked against both. Parts that conflict are left out.
Bolt Carrier Group
FAXON Firearms 5.56 Nitride TIN PVD
Fits both
Charging Handle
Fits both
Stock & Brace
Suppressor
PSA Lower 300BO vs Daniel Defense M4A1 FSP FDE: specs and prices
| PSA Lower 300BO | Daniel Defense M4A1 FSP FDE | |
|---|---|---|
| Best price | $249.99 at Palmetto State Armory | $1457.00 at AR15 Discounts |
| Stores | 1 of 1 in stock | 2 of 2 in stock |
| Assembly | Complete | Complete |
| Platform | AR-15 | AR-15 |
| Caliber | 300 Blackout | 5.56 NATO |
| Trigger Pin | .154 | n/a |
| Color | FDE | n/a |
| Receiver Type | n/a | M4 |
| Length | n/a | 14.5 |
Both for $1706.99 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.
- Daniel Defense M4A1 FSP FDE 5.56 NATO: lowest $1457.00 on Jul 5, highest $1457.00 on Jul 5 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 uppers
The Daniel Defense M4A1 FSP FDE 5.56 NATO is not in enough builds yet, so these are the most picked next to any upper. Only parts our rules say fit the Daniel Defense M4A1 FSP FDE 5.56 NATO are listed.
