Description
The Diamondback DB9 is one of the smallest and lightest 9mm pistols made, weighing about 11 ounces with a 3 inch barrel and a 6+1 capacity. This black model is built for deep concealment when a larger carry gun simply will not fit.

Diamondback DB9 9mm Pocket Pistol Overview
Diamondback Firearms builds the DB9 in Cocoa, Florida. Model DB0200P001 has a polymer frame, a black steel slide and an overall length of only 5.6 inches. It uses a zero-energy striker design, meaning the striker is not held under spring tension until the trigger is pulled, and it relies on internal safeties rather than a manual thumb safety. Sights are windage-adjustable, and the pistol ships with one 6 round magazine.
Size and Carry
At this size the DB9 fits in a front pants pocket, an ankle rig or a small belly band, making it a common choice for warm-weather carry and as a backup gun. Always carry it in a proper pocket holster that covers the trigger guard, since a bare pistol in a pocket can shift and snag. Holster choices are narrower than for popular guns like the Sig P365, so shop carefully.

Recoil and Trigger
Physics matters here: an 11 ounce gun firing 9mm produces sharp, snappy recoil that many shooters find tiring after a box of ammo. The long trigger stroke adds a margin of safety for pocket carry but makes precise shots harder. Practice is essential, and newer shooters may prefer a slightly larger and heavier pistol. A firm, high grip and dry-fire practice with an empty chamber help a lot. Many owners find they shoot it best at typical self-defense distances of 3 to 7 yards, which is exactly what it is designed for.
Reliability and Ammunition
Very small, light pistols are more sensitive to grip and ammunition than full-size guns. Test at least a few hundred rounds, including your chosen defensive load, before trusting it for carry. Use standard pressure ammunition unless the owner manual specifically approves +P loads, and keep a firm grip to avoid limp-wrist malfunctions.

Capacity and Magazines
With 6+1 rounds, the DB9 holds less than modern micro-compacts that carry 10 to 12 rounds in a similar footprint. That is the tradeoff for its very thin, light frame. Carrying a spare magazine is a smart habit, and extended magazines are available if you want a fuller grip. Note that this original DB9 uses different magazines than the newer DB9 Gen4, so check compatibility before buying spares.
Care and Maintenance
Field stripping is straightforward. Clean the barrel, feed ramp and slide rails regularly, since pocket carry exposes a pistol to lint and dust that can cause malfunctions. Replace the recoil spring as recommended; small pistols wear springs faster than larger ones. Inspect the magazine springs and followers periodically as well, especially if magazines stay loaded for long periods.
State Laws and Ownership
Some states maintain handgun rosters or require specific safety features, and the DB9 is not approved for sale in every state. Carry permit rules also differ widely. Confirm your own state and local laws before ordering.
Specifications
- Manufacturer: Diamondback Firearms
- Model: DB9 (DB0200P001)
- Caliber: 9mm
- Action: striker fired
- Barrel length: 3 in.
- Overall length: 5.6 in.
- Weight: 11 oz.
- Capacity: 6+1, one magazine included
- Frame: black polymer
- Sights: windage-adjustable
- Safety: internal
- Finish: black
- UPC: 810035752566
Before You Buy
Federal law requires handgun buyers to be 21 or older to purchase from a licensed dealer, and every firearm ships to your local FFL for transfer and a background check. Budget for a quality holster, spare magazines and enough practice ammunition to learn this pistol.
Who It Is For
The Diamondback DB9 9mm Pocket Pistol is a great fit for experienced shooters who need maximum concealment, as a second carry pistol, or for warm-weather carry when a larger pistol is not practical.
Buy the Diamondback DB9 9mm Pocket Pistol at MAG5 Firearms
MAG5 Firearms is a family-owned FFL in Collegeville, Pennsylvania. Order the Diamondback DB9 9mm Pocket Pistol online and ship it to your local FFL dealer, or browse our full selection of firearms for more pistols. For factory details, visit Diamondback Firearms.







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