Does the Radical Firearms 10.5" 300 Blackout 1:8 work with the Radical Firearms 5.56/300 Melonite?
Upper Receiver
Radical Firearms 10.5" 300 Blackout 1:8 Pistol Length
from $377.01
Bolt Carrier Group
Radical Firearms 5.56/300 Melonite
from $99.85
Radical Firearms upper and Radical Firearms bolt carrier group compatibility
Yes, they fit
The Radical Firearms 10.5" 300 Blackout 1:8 Pistol 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 Radical Firearms 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 Radical Firearms 5.56/300 Melonite and any upper
- This pairRadical Firearms 10.5" 300 Blackout 1:8 Pistol10%
Radical Firearms 10.5" 300 Blackout 1:8
- Of upper picks
- 0%
- Median paid
- $375
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 Radical Firearms 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
Suppressor
Lower Receiver
Fits both
Barrel
Radical Firearms 10.5" 300 vs Radical Firearms 5.56/300: specs and prices
| Radical Firearms 10.5" 300 | Radical Firearms 5.56/300 | |
|---|---|---|
| Best price | $377.01 at BattleHawk Armory | $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 |
| Gas System Length | Pistol | n/a |
| Caliber | 300 Blackout | n/a |
| Length | 10.5 | n/a |
| Cartridge | n/a | 5.56 NATO |
| Style | n/a | M16 Bolt Carrier |
| Finish | n/a | Nitride |
Both for $476.86 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
- 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 most paired with Radical Firearms uppers
The Radical Firearms 10.5" 300 Blackout 1:8 is not in enough builds yet, so these are the most picked next to any Radical Firearms upper. Only parts our rules say fit the Radical Firearms 10.5" 300 Blackout 1:8 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.
