Does the Diamondback DB15 AR Lower work with the Diamondback Firearms 300 Blackout 10"?

Lower Receiver
Diamondback DB15 AR Lower
from $58.99

Barrel
Diamondback Firearms 300 Blackout 10" 1:8 Pistol Length Gas
from $80.00
Diamondback lower and Diamondback barrel compatibility
Yes, they fit
The Diamondback DB15 AR Lower works with the Diamondback Firearms 300 Blackout 10" 1:8 Pistol. 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 Diamondback lower and Diamondback barrel
Backed by thousands of qualified builds that have both a lower and a barrel.
Share of builds with the Diamondback DB15 AR Lower and any barrel
Share of builds with the Diamondback Firearms 300 Blackout 10" and any lower
- This pairDiamondback DB15 AR Lower33%
Diamondback DB15 AR Lower
- Of lower picks
- 0.3%
- Median paid
- $59
Diamondback Firearms 300 Blackout 10"
- Of barrel picks
- 0.1%
- Median paid
- $80
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 Diamondback lower and Diamondback barrel
The part builders pick most often in each slot alongside these two, checked against both. Parts that conflict are left out.
Diamondback DB15 AR Lower vs Diamondback Firearms 300: specs and prices
| Diamondback DB15 AR Lower | Diamondback Firearms 300 | |
|---|---|---|
| Best price | $65.00 at BattleHawk Armory | $80.00 at BattleHawk Armory |
| Stores | 4 of 7 in stock | 4 of 5 in stock |
| Assembly | Stripped | n/a |
| Platform | AR-15 | n/a |
| Caliber | Multi | 300 Blackout |
| Trigger Pin | .154 | n/a |
| Finish | Hardcoat Anodized | n/a |
| Color | Black | n/a |
| Gas System | n/a | Pistol |
| Length | n/a | 10 |
| Twist | n/a | 1:8 |
| Contour | n/a | HBAR |
Both for $145.00 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.
Diamondback DB15 AR Lower
Price history, last 90 days
- Diamondback DB15 AR Lower: lowest $64.99 on Aug 29, highest $88.99 on Aug 15 over the last 90 days.
- Diamondback Firearms 300 Blackout 10": lowest $80.00 on Jul 5, highest $109.99 on Aug 15 over the last 90 days.
Barrels frequently paired with the Diamondback DB15 AR Lower
Most picked next to it in real builds. Only parts our rules say fit the Diamondback DB15 AR Lower are listed.
Lower Receivers most paired with Diamondback barrels
The Diamondback Firearms 300 Blackout 10" is not in enough builds yet, so these are the most picked next to any Diamondback barrel. Only parts our rules say fit the Diamondback Firearms 300 Blackout 10" are listed.























