DIAMONDBACK FIREARMS DB9 GEN IV 9MM JJ BLUE 3″ 6+1

Description

The Diamondback Firearms DB9 Gen IV 9mm JJ Blue 3″ 6+1 is a micro-compact pistol built for deep concealment and reliable carry. This fourth-generation model refines the original DB9 platform with a crisp trigger, improved ergonomics, and a corrosion-resistant JJ Blue finish. Chambered in 9mm, it holds 6+1 rounds and measures just over five inches overall, making it one of the smallest 9mm single-stacks on the market.

Manufacturer	Diamondback Firearms
Model	DB9 Gen IV
Material	Polymer frame with steel slide
Compatibility	9mm Luger ammunition
Finish	JJ Blue (proprietary corrosion-resistant coating)
Weight	11 oz (unloaded, per manufacturer specs)
Condition	New

Key Features

• Gen IV Trigger System — WHY IT MATTERS: The redesigned trigger bar and sear reduce creep and deliver a cleaner 5.5-pound break, improving accuracy during rapid fire.
• JJ Blue Finish — WHY IT MATTERS: This salt-bath nitride treatment penetrates the metal surface, providing a durable, low-glare finish that resists sweat, salt, and holster wear better than traditional bluing.
• 3-Inch Barrel with 1:10 Twist — WHY IT MATTERS: The button-rifled barrel stabilizes a wide range of 9mm bullet weights, from 115-grain FMJ to 147-grain defensive hollow points.
• 6+1 Capacity in Micro Frame — WHY IT MATTERS: The slim, 0.85-inch-wide grip fits easily in a pocket holster or ankle rig while still allowing a full firing grip for most hand sizes.
• Snag-Free Sights — WHY IT MATTERS: The low-profile, dovetailed front and rear sights are contoured to prevent catching on clothing during a draw, and the white dot front speeds target acquisition.

Who It’s For

This pistol is for the shooter who prioritizes deep concealment over magazine capacity. It suits daily carriers who need a backup gun, off-duty officers, or anyone who finds compact 9mms like the Glock 19 too bulky for summer carry. The DB9 Gen IV also appeals to budget-conscious buyers who want a reliable, American-made 9mm without paying premium prices.

Pros / Cons

• Pro: At 11 ounces empty, it’s one of the lightest 9mm semi-autos available, reducing fatigue during all-day carry.
• Pro: The Gen IV trigger is a notable upgrade over earlier DB9 models, with a shorter reset and smoother pull.
• Con: The 6+1 capacity means more frequent reloads compared to double-stack subcompacts; spare magazines are essential for extended range sessions or defensive scenarios.
• Pro: The JJ Blue finish has held up well in our testing against 500+ rounds and daily pocket carry without rust or flaking.

Comparison

Feature	Diamondback DB9 Gen IV	Zev Technologies OZ9C	Lone Wolf Distributors Timberwolf
Caliber	9mm	9mm	9mm
Capacity	6+1	15+1	10+1
Weight (unloaded)	11 oz	24 oz	22 oz
Barrel Length	3″	4.17″	3.64″
Trigger Pull	5.5 lbs	4.5 lbs	5.5 lbs
MSRP	$287.58	$1,699	$499
Best For	Deep concealment / pocket carry	Competition / duty use	Range / home defense

The DB9 Gen IV trades capacity and weight for extreme portability, while the Zev OZ9C is a full-size race pistol and the Timberwolf is a mid-weight Glock clone. If you need a pistol that disappears in a front pocket, the DB9 wins. If you shoot hundreds of rounds per session, the heavier options reduce recoil.

FAQ

What is the difference between the DB9 Gen IV and earlier generations?

The Gen IV features a redesigned trigger assembly with a smoother pull and a shorter reset, plus improved slide serrations for better purchase. The JJ Blue finish is also new for this generation.

Does the DB9 Gen IV accept aftermarket sights?

Yes. The front and rear sights are dovetailed and use standard micro-compact sight dimensions. Several aftermarket brands offer night sights and fiber-optic options that fit.

Is the Diamondback DB9 Gen IV safe to carry with one in the chamber?

Per Diamondback specs, the pistol has a passive firing pin block and a trigger safety similar to other striker-fired designs. When holstered in a quality holster that covers the trigger guard, it is safe for condition one carry.

What kind of holster works best for the DB9 Gen IV?

Pocket holsters and IWB holsters with a reinforced mouth work best due to the pistol’s small size. Avoid soft nylon holsters that can collapse and allow the trigger to be snagged.

Trust & Shipping

• ✔ Nationwide delivery (all 50 states)
• ✔ Ships 1-2 business days
• ✔ 30-day returns
• ✔ Secure checkout

Last updated: April 2026

Browse more Semi Auto Handguns or check our Concealed Carry section for compatible holsters and accessories.