Does the Daniel Defense DD4 FDE RIII Barreled work with the Radical Firearms 5.56/300 Melonite?
Upper Receiver
Daniel Defense DD4 FDE RIII Barreled
from $999.99
Bolt Carrier Group
Radical Firearms 5.56/300 Melonite
from $99.85
Daniel Defense upper and Radical Firearms bolt carrier group compatibility
Yes, they fit
The Daniel Defense DD4 FDE RIII Barreled works with the Radical Firearms 5.56/300 Melonite. 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 Daniel Defense upper and Radical Firearms bolt carrier group
Backed by thousands of qualified builds that have both an upper and a bolt carrier group.
Share of builds with the Daniel Defense DD4 FDE RIII Barreled and any bolt carrier group
- This pairRadical Firearms 5.56/300 Melonite20%
Share of builds with the Radical Firearms 5.56/300 Melonite and any upper
- This pairDaniel Defense DD4 FDE RIII Barreled10%
Daniel Defense DD4 FDE RIII Barreled
- Of upper picks
- 0%
- Median paid
- $1000
Radical Firearms 5.56/300 Melonite
- Of bolt carrier group picks
- 0.1%
- Median paid
- $100
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 Daniel Defense upper and Radical Firearms bolt carrier group
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
Lower Receiver
Unconfirmed
Suppressor
Pistol Grip
Barrel
Daniel Defense DD4 FDE RIII vs Radical Firearms 5.56/300: specs and prices
| Daniel Defense DD4 FDE RIII | Radical Firearms 5.56/300 | |
|---|---|---|
| Best price | $999.99 at Primary Arms | $99.85 at Primary Arms |
| Stores | 0 of 1 in stock | 1 of 1 in stock |
| Assembly | Complete | n/a |
| Platform | AR-15 | n/a |
| Caliber | 5.56 NATO | n/a |
| Length | 11.5 | n/a |
| Cartridge | n/a | 5.56 NATO |
| Style | n/a | M16 Bolt Carrier |
| Finish | n/a | Nitride |
Both for $1099.84 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
- Daniel Defense DD4 FDE RIII Barreled: lowest $999.99 on Jul 7, highest $999.99 on Jul 7 over the last 90 days.
- Radical Firearms 5.56/300 Melonite: lowest $99.85 on Jul 6, highest $99.85 on Jul 6 over the last 90 days.
Bolt Carrier Groups frequently paired with the Daniel Defense DD4 FDE RIII Barreled
Most picked next to it in real builds. Only parts our rules say fit the Daniel Defense DD4 FDE RIII Barreled are listed.
Upper Receivers frequently paired with the Radical Firearms 5.56/300 Melonite
Most picked next to it in real builds. Only parts our rules say fit the Radical Firearms 5.56/300 Melonite are listed.
