Diamondback HFDB15 Review | AR-15 Now Rockin’ a Knight’s Armament Cold Hammer Forged Barrel

The Barrel That Changes Everything
Watch this video of Cody St. John of Diamondback Firearms as he shares the features of the new Diamondback Firearms HFDB15 with a Knight’s Armament Cold Hammer Forged Barrel! You don’t want to miss this Diamondback HFDB15 Review.

“We’ve made barrels for all our other product lines, but we were just missing a hammer-forged option. Having Knight’s down the road made it possible. We took their CHF blanks, turned them in-house, and dropped them into one of our LE baseline models. It’s a plain-Jane, hard-use rifle—with one of the best barrels on the market.”

Diamondback Firearms HFDB15 Specs:
Finish: Black Hardcoat Anodize
Caliber: 5.56 NATO
Barrel: DB Barrels, 16 in, 1:7 RH, Chrome Lined Phosphate
Gas System: Mid-Length, Direct Impingement
BCG: Phosphate Chrome Lined M16 BCG
Upper: A3 Flattop Forged 7075 T-6 Aluminum
Lower: Forged 7075 T-6 Aluminum (DB15 Carbon Lower)
Handguard: 15 in M-Lok Anti-Rotation V2 S-Rail w/ Full Picatinny
Grip: Magpul MOE K2 Grip
Stock: Magpul CTR Stock
Magazine: Magpul Gen M2 PMAG, 30 Round
Sights: Magpul Flip Up Front & Rear
Muzzle Device: A2 Flash Hider [1/2 x 28]
Trigger: Mil-Spec
Weight: 6.53 lbs
Length (Collapsed / Extended): 32in /35.5 in
UPC: 810035754478

Built to Work, Not Just Look Good
Diamondback didn’t get distracted with flashy extras here. This is a “LE Baseline” model, meaning you’re getting a streamlined rifle designed to perform without needing upgrades right out of the gate.

What Advantages Does the Knight’s Armament CHF Barrel Bring to the DB15 Platform?
Knight’s Armament CHF barrels are known for their exceptional durability, barrel life, and accuracy. The cold hammer forging process creates a denser, more wear-resistant barrel, making it ideal for high-volume shooting and harsh conditions. When paired with the DB15, it significantly upgrades the rifle’s overall quality.

Who’s This Rifle For?
The duty-bound officer who needs a rifle that just works—every time.
The home defender who believes in overbuilding, not overpaying.
The weekend warrior who runs their gear like it owes them money.
The collector who wants something rare and rock-solid.