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The DB9 Gen IV is what Diamondback has been building toward since the original DB9 hit the market. Each generation addressed the feedback from the last, and the Gen 4 is the most refined version yet. Up front you get front and rear slide serrations that are actually deep enough to grip, an improved short-reset trigger with a crisp wall, a fully captured recoil spring assembly, and last-round slide lock. These aren't small things on a gun this size.
At 5.73 inches long and just 0.9 inches wide, the DB9 Gen IV sits in a category of one when it comes to true pocket-carry 9mms. The flush magazine brings the height down to a flat 4 inches, making this one of the few 9mm pistols that can genuinely disappear into a front pocket with the right holster. The 13.4 oz unloaded weight means you'll barely notice it's there during a long day of carry.
The OD Green polymer frame pairs with a stainless steel slide finished in black nitride for corrosion resistance, and the barrel and internal components share that same protective coating. Diamondback runs their own coating operation in-house, which makes sense given their Florida roots and the saltwater environment they work around. The 3.1-inch stainless barrel has a 1:10 right-hand twist and is built to handle standard 9mm loads.
Sights are 3-dot windage-adjustable and Glock-pattern compatible, which means upgrading to tritium or fiber optic night sights down the road is a straightforward swap. The trigger is a double-action-only striker-fired design using Diamondback's Zero-Energy striker system, which incorporates a mechanical firing pin block as part of the internal safety package. Trigger pull measures around 5.5 lbs, reasonable for a carry gun of this type.
The DB9 Gen IV makes the most sense for someone who needs a backup gun, a dedicated pocket pistol, or a warm-weather carry option when a larger gun just isn't practical. It ships with one 6-round magazine that includes a finger extension baseplate, a zippered carry case, and the standard documentation.
Yes, and it's one of the few 9mm pistols that can make that claim honestly. At 0.9 inches wide, 4 inches tall with a flush magazine, and 13.4 oz unloaded, it fits comfortably in a front pocket with a proper pocket holster. A dedicated pocket holster is strongly recommended to keep the gun oriented correctly and protect the trigger.
The Gen 4 is a meaningful step up from earlier generations. Diamondback added front and rear slide serrations that are deeper and more usable, an improved short-reset trigger, a fully captured recoil spring assembly, and a last-round slide lock. The Gen 4 also supports 9mm +P ammunition, which earlier versions did not.
Yes, and it's one of the more convenient aspects of owning this pistol. The DB9 Gen IV uses Glock-pattern compatible sights, so a wide range of aftermarket options including tritium night sights and fiber optic sights can be installed without any custom fitting or gunsmithing.
There is no external manual safety on the DB9 Gen IV. It relies on Diamondback's Zero-Energy striker system combined with a mechanical firing pin block, which prevents the firing pin from moving unless the trigger is fully pressed. This is a common and well-established design approach for carry pistols.
There are a solid number of options available, both from holster makers that specifically pattern for the DB9 and some makers of Ruger LC9-compatible holsters, which share enough overlap to work. For pocket carry, brands like DeSantis and Blackhawk offer pocket holsters that fit the DB9 Gen IV well. IWB and OWB Kydex options are also available from several custom holster makers.
The Gen 4 runs standard pressure 9mm and 9mm +P loads. For carry purposes, quality 9mm JHP loads in the 115-147 grain range are the typical recommendation. Unlike some earlier DB9 models, the Gen 4 is rated for +P, giving more flexibility for defensive ammo selection.
| UPC | 810035752603 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | DB0200P101 |
| Action | |
| ATF Type | Pistol |
| Barrel Length | 3.1" |
| Caliber/Gauge | 9mm |
| Capacity | 6 + 1 |
| Length | 5.5 |
| Magazine Included | 1 x 6-Round |
| Model | |
| Number of Magazines | 1 6 rd. |
| Package Height | 6.5 |
| Package Width | 1.5 |
| Product Type | Semi-Auto Pistol |
| Safety | Firing Pin |
| Shipping Weight | 1.45 |
| Sights | 3-Dot |
| Sights Type | 3-Dot |
| Slide Description | Serrated |
| Units per Box | 1 |
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