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This is Diamondback's own 10" replacement barrel chambered in 9mm Luger, made to drop straight into the DB9R family of uppers. It is cut from 4150 chrome moly vanadium steel and given a black nitride treatment inside and out, which is the same tough finish you'll find on most quality factory barrels for a reason. Nitride resists corrosion, holds up to heat, and keeps the bore slick for easy cleaning after a long range day.
The profile here is a medium contour, which strikes a nice middle ground between the weight savings of a lightweight barrel and the heat management of a heavier one. It wears a 1:9 twist that handles the common 115 to 147 grain 9mm loads without fuss, and the muzzle comes threaded 5/8×24 so you can run a flash hider, comp, or suppressor without hunting down an adapter. That thread pitch is the standard for 9mm devices, so your options are wide open.
This is a platform-specific part. The DB9P barrel is designed to configure with the Diamondback DB9R bolt carrier group only, so it is meant for folks running that particular blowback system rather than a generic 9mm AR build. If you already have a DB9R upper and want to change your barrel length or freshen up a worn tube, this is the direct route to keep everything running the way Diamondback intended.
Changing barrel length on a DB9R setup is about as simple as barrel swaps get, and having a factory part cut to spec takes the guesswork out of headspace and gas dynamics. Pair it with your existing DB9R BCG and handguard, torque it down, and you're back to building or shooting. It's a smart pickup for anyone finishing a fresh build or bringing an older setup back to life.
No, this one is built to configure with the Diamondback DB9R bolt carrier group specifically. It is a platform part meant for DB9R owners rather than a universal 9mm AR barrel. If you're running a different 9mm setup, you'll want a barrel matched to that system instead.
It's cut with a 1:9 twist, which stabilizes the usual range of 9mm bullet weights from light 115 grain up through heavier 147 grain subsonic loads. The muzzle is threaded 5/8×24, the standard for 9mm muzzle devices, so a flash hider, comp, or suppressor will thread right on.
4150 chrome moly vanadium is a proven barrel steel that handles heat and sustained fire better than lighter alloys. The black nitride finish adds corrosion resistance and a slick bore that makes cleaning easier and helps the barrel last. It's the same combination used on plenty of quality factory barrels.
Changing barrel length on the DB9R platform is a straightforward job since this part is cut to Diamondback's factory spec. Basic AR tools and a torque wrench get it done, and because it's designed for the DB9R you don't have to fuss over gas or fitment surprises.
| UPC | 815875019237 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | 9X1910M50B984NFR |
| Length | 10" |
| Model |
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