Diamondback Guns for Sale

Founded: 2009

HQ: United States

Diamondback Firearms LLC is a United States manufacturer founded in 2009. The company built its reputation on slim micro-compact carry pistols and an AR-15–pattern rifle line, and later added a 5.7×28 pistol and a convertible .22 LR/.22 WMR revolver. Over 159 Diamondback auctions have run on FirearmLand. Bidders see the DB15, DB10, and Sidekick most often.

Popular Diamondback Models for Sale

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Diamondback Auctions

2 active auctions ending soon

Diamondback DB380 380 ACP 2.8 Two-Tone OD Green DB +2 MAGS

Diamondback DB380 380ACP DB-380

Diamondback DB15 5.56 NATO AR-15 AR15 DB 16" THREADED +CT OPTICS

Diamondback DB15 556 DB-15 AR15 AR

Recently Sold

Sold On 05/15/2026

Diamondback DB15 5.56 NATO AR-15 AR15 16" DB MAGPUL +3 MAGS

Diamondback DB15 DB 15 AR15 M-Lok AR MAG LULA

Sold On 05/08/2026

Diamondback DB15 MZ OR FDE 5.56 NATO AR-15 AR15 16 DB Two-Tone +3 MAGS

Diamondback DB15 DB DB15MZ AR-15 AR15 M-Lok

Sold On 05/06/2026

Diamondback DB15 5.56 NATO AR-15 AR15 7" FDE DB +4 MAGS & ORIG CASE

Diamondback DB15 DB 15 556 AR15 PDW

Sold On 05/06/2026

Diamondback DB15 5.56 NATO AR-15 AR15 16" FDE & Black DB +2 MAGS

Diamondback DB15 AR15 556 AR-15 Free-Float M-LOK

Sold On 04/08/2026

Diamondback DB15 5.56 NATO AR-15 AR15 16" DB +SIG ROMEO-MSR RED DOT

Diamondback DB15 556 AR15 AR-15

Sold On 04/03/2026

Diamondback SDR 357 Magnum 3" Polished Stainless DB +OG BOX & ORIG CASE

Diamondback DB SDR 357-Mag DA/SA CCW Carry

Sold On 04/01/2026

Diamondback DB15 5.56 NATO AR-15 AR15 7" FDE DB

Diamondback DB15 556 AR-15 AR15 DB

Sold On 03/25/2026

Diamondback SDR 9mm 2" Stainless +ORIG BOX & HOLSTER

Diamondback DB SDR 9-mm DA/SA CCW Carry

Sold On 03/25/2026

Diamondback DB15 5.56 NATO AR-15 AR15 16" FDE +2 MAGS

Diamondback DB DB15 556 AR-15 AR15

Sold On 03/18/2026

Diamondback DB15 16" 5.56 NATO AR-15 AR15 Magpul MOE Tactical +ORIG BOX

Diamondback DB DB15 556 AR-15 AR15 M-LOK

Sold On 03/13/2026

Diamondback (DB) DB15 5.56 NATO 16" AR-15 AR15 +5 MAGS

Diamondback DB-15 5.56X45 AR15 Tactical-AR 556

Sold On 03/13/2026

Diamondback DB15 5.56 NATO AR-15 AR15 16" +3 MAGS

Diamondback DB DB15 556 AR-15 AR15

Sold On 03/09/2026

Diamondback DB-15 5.56 NATO AR15 16" DB15 AR Defense Rifle +3 MAGS

Diamondback DB-15 DB15 AR15 556 Sporting Hunting

Sold On 03/06/2026

Diamondback DB15 5.56 NATO AR-15 AR15 10" FDE DB SB-Tactical

Diamondback DB DB15 556 AR15 AR-15

Sold On 02/23/2026

Diamondback DB15 5.56 NATO 16" Black & Tan AR-15 AR15

Diamondback DB DB15 556 Tactical-FDE AR-15 AR15

Sold On 02/20/2026

Diamondback DB-15 300 Blackout AR15 16" Two-Tone FDE DB15 Sporting Rifle

Diamondback DB DB15 AR15 300-BLK-AAC AR Defense

Sold On 02/16/2026

Diamondback DB15 300 Blackout AR-15 AR15 16" DB Magpul M-LOK +OPTIC

Diamondback DB DB15 300-BLK-AAC AR15 AR-15

Sold On 02/09/2026

Diamondback DB15 5.56 NATO AR-15 AR15 16" DB +2 MAGS

DB DB15 556 AR15 AR-15 M-LOK Rail

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Sold On 02/04/2026

SNUBNOSE Diamondback SDR 357 Magnum 2" Polished Stainless +ORIG BOX

Diamondback DB SDR 357-Mag DA/SA Revolver

Sold On 01/28/2026

Diamondback DB15 5.56 NATO AR-15 AR15 16" Magpul MOE

Diamondback DB DB15 556 AR-15 AR15 M-LOK

Sold On 01/26/2026

HOME DEFENSE! Diamondback DB-15 5.56 NATO 16" AR15

Diamondback DB DB15 556 AR15 AR-15 Tactical

Sold On 01/14/2026

Diamondback DB15 5.56 NATO AR-15 AR15 16 FDE

Diamondback DB DB15 556 AR-15 AR15 M-LOK

Sold On 12/29/2025

Diamondback DB15 5.56 NATO AR-15 AR15 16" FDE +2 MAGS & ORIG CASE

DB DB15 556 AR-15 AR15 M-LOK

Sold On 12/12/2025

GLOCK-MAG Diamondback DB9R Carbon Series 9mm AR-9 AR15 16" AR9 Rifle

Diamondback DB DB9-R 9-mm AR-15 Target Defense

Sold On 12/08/2025

USA MADE Diamondback DB15 5.56 NATO AR-15 AR15 16" +ORIG BOX

M-LOK Handguard DB DB15 556 AR-15 AR15

Sold On 12/08/2025

AR47 Diamondback DB15 7.62x39 DB AR-15 AR15 16" +2 MAGS

Side Charger DB DB15 762 AR-15 AR15 M-LOK

Sold On 11/21/2025

DEALER-EXCLUSIVE Diamondback DB10 6.5 Creedmoor AR-10 AR10 20 Rifle +2 MAGS

Diamondback DB-10 6.5CM AR-10 AR10 Sporting Target

Sold On 11/12/2025

Diamondback DB15 5.56 NATO AR-15 AR15 16" FDE DB

DB DB15 556 AR-15 AR15 M-LOK

Sold On 11/10/2025

Diamondback DB15 Carbon Series 5.56 NATO 16" AR-15 AR15 +3 MAGS

Diamondback DB-15 556 (223REM) AR15 Tactical-AR

Sold On 11/07/2025

Diamondback DB15 Carbon Series 300 Blackout 16" AR-15 AR15 +3 MAGS

Diamondback DB-15 300-BLK-AAC AR15 300BLK

Sold On 11/03/2025

Diamondback DB-15 Pistol 5.56 NATO AR-15 AR15 7"

Diamondback DB15 DB-15 Pistol 556 AR-15 AR15

Sold On 10/29/2025

Diamondback DB15 Diamond Series 5.56 NATO AR-15 AR15 16" M-LOK Tactical

Diamondback DB-15 556 AR AR15 Defense Rifle

Sold On 10/22/2025

Diamondback Sidekick Birdshead 22 LR/22 WMR 3" Revolver

Diamondback DB Single-Action Sidekick 22LR/22-Mag

Sold On 10/17/2025

Diamondback DB15 5.56 NATO AR-15 AR15 16" Rifle +ORIG BOX

Diamondback DB DB15 556 AR-15 Target AR15 Hunting

Sold On 10/15/2025

Diamondback SDR 357-Magnum 2" Snub-Nose Stainless +ORIG BOX

Diamond-Back DB SDR 357-Mag DA/SA 357MAG

Sold On 10/10/2025

Diamondback DB-15 Carbon-Series 5.56 NATO (.223 REM) 16" AR-15 AR15 +4 MAGS

DB DB15 556 (223 Remington) AR-15 AR15 Sporting

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Diamondback Guns for Sale

Popular Diamondback Models for Sale

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