Does the Radical Firearms 10.5" 300 Blackout 1:8 work with the Diamondback Firearms 5.56?

Does Radical Firearms 10.5" 300 fit Diamondback Firearms 5.56?

Upper Receiver

Radical Firearms 10.5" 300 Blackout 1:8 Pistol Length

from $377.01

Bolt Carrier Group

Diamondback Firearms 5.56

Radical Firearms upper and Diamondback bolt carrier group compatibility

Yes, they fit

The Radical Firearms 10.5" 300 Blackout 1:8 Pistol works with the Diamondback Firearms 5.56. Our compatibility rules found no conflict between them.

No one has built this exact setup yet, but Radical Firearms uppers with Diamondback bolt carrier groups are a common pairing.

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 Diamondback bolt carrier group

Backed by thousands of qualified builds that have both an upper and a bolt carrier group.

Upper Receivers builders put under the Diamondback Firearms 5.56

Share of builds with the Diamondback Firearms 5.56 and any upper

Radical Firearms 10.5" 300 Blackout 1:8
Of upper picks
0%
Median paid
$375
Diamondback Firearms 5.56
Of bolt carrier group picks
0.8%
Median paid
n/a

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 Diamondback bolt carrier group

The part builders pick most often in each slot alongside these two, checked against both. Parts that conflict are left out.

Radical Firearms 10.5" 300 vs Diamondback Firearms 5.56: specs and prices

	Radical Firearms 10.5" 300	Diamondback Firearms 5.56
Best price	$377.01 at BattleHawk Armory	n/a
Stores	0 of 1 in stock	n/a
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	AR-15 Bolt Carrier
Finish	n/a	Nitride
Weight	n/a	16.05

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.

Radical Firearms 10.5" 300 Blackout 1:8 Pistol

BattleHawk Armoryout of stock$377.01

Diamondback Firearms 5.56

No store lists it today.

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.