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Diamondback
Overview
The Diamondback Firearms .300 Blackout AR-15 barrel features a 10.5-inch heavy profile, designed specifically for the .300 Blackout caliber. With a pistol-length gas system and a 1:8 twist rate, this barrel provides reliable performance and stability for subsonic and supersonic ammunition alike. Commonly found in pistol builds, this barrel is ideal for those looking to maximize the versatility of their .300 Blackout setup.
Based on build data

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Aggregated and anonymized data showing how builders use this product
| Product | Category | Times Built Together |
|---|---|---|
| Maximize Your AR-15's Potential with Tacfire's 15" ACE M-LOK Handguard - Black Excellence - HG20-15 | 6 | |
| Wilson Combat Ar-15 Billet Upper Receiver | 6 | |
| Wilson Combat Ar-15 Lo-Profile Gas Block .750" Black | 4 | |
| Aero Precision M4e1 Threaded Stripped Ar-15 Upper - No Forward Assist - Anodized Black | 3 | |
| Aero Precision Ar-15 5.56 Bcg W/c158 Bolt - Aero Logo - Phosphate | 3 | |
| Strike Industries Ar Forward Assist With Hex Design Black | 3 |
| Caliber | Percentage |
|---|---|
| 300 Blackout | 100% |
| Gas System | Percentage |
|---|---|
| Pistol | 100% |
Builds in the community that include the Diamondback Firearms .300 Blackout Ar-15 Barrel - Nitride - 10.5"
| Build | Parts | Total |
|---|---|---|
![]() | 23 | $2422.52 |
![]() | 22 | $2014.58 |
![]() | 23 | $1471.30 |
![]() | 14 | $582.32 |
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