Diamondback DB15 for sale
(2)
Diamondback DB15 5.56 NATO 16" 30Rd Black Semi-Auto Rifle AR-15
Brand:
Diamondback
Action:
Semi-Auto
Barrel Length:
16
Caliber:
5.56×45mm NATO
Capacity:
30
Finish Per Color:
Black
(0)
Diamondback DB15 5.56x45 NATO AR-15 Semi Automatic Rifle
Brand:
Diamondback
Action:
Semi-Auto
Barrel Length:
16"
Caliber:
5.56×45mm NATO
Capacity:
30+1
Finish Per Color:
Black
(0)
Diamondback DB15 AR Pistol Carbine Length
Brand:
Diamondback
Action:
Semi-Auto
Barrel Length:
7in
Caliber:
5.56×45mm NATO
Capacity:
30
Finish Per Color:
Black
(1)
Diamondback DB15 AR Pistol Carbine Length
Brand:
Diamondback
Action:
Semi-Auto
Barrel Length:
10in
Caliber:
5.56×45mm NATO
Capacity:
30
Finish Per Color:
Black
(20)
DIAMONDBACK DB15
Brand:
Diamondback
Action:
Semi-Auto
Barrel Length:
16in
Caliber:
5.56×45mm NATO
Capacity:
30
Finish Per Color:
Midnight Bronze
(1)
Diamondback DB15 Midnight Bronze AR 15 5.56 NATO / .223 Rem 16" Barrel 30-Rounds
Brand:
Diamondback
Action:
Semi-Auto
Barrel Length:
16in
Caliber:
5.56×45mm NATO
Capacity:
30+1
Finish Per Color:
Midnight Bronze
(2)
DIAMONDBACK DB15 AR Pistol Carbine Length
Brand:
Diamondback
Action:
Semi-Auto
Barrel Length:
10in
Caliber:
5.56×45mm NATO
Capacity:
30
Finish Per Color:
Flat Dark Earth
(0)
Diamondback DB15 AR 15 5.56/.223 Rem 16" Barrel 30-Rounds Optic Ready
Brand:
Diamondback
Action:
Semi-Auto
Barrel Length:
16in
Caliber:
5.56×45mm NATO
Capacity:
30+1
Finish Per Color:
Black
(20)
DIAMONDBACK DB15
Brand:
Diamondback
Action:
Semi-Auto
Barrel Length:
16in
Caliber:
5.56×45mm NATO
Capacity:
30
Finish Per Color:
Flat Dark Earth
(0)
DIAMONDBACK FIREARMS DB15 .350 LEGEND 16" 5RD BLACK MLOK 15 RAIL
Brand:
Diamondback
Barrel Length:
16"
Caliber:
.350 Legend
Capacity:
5
Finish Per Color:
Black
Rounds:
5
(20)
Diamondback DB15 5.56/.223, 16" Barrel, 10" Freefloating Rail, Black, 30rd
Brand:
Diamondback
Action:
Semi-Auto
Barrel Length:
16in
Caliber:
5.56×45mm NATO
Capacity:
30+1
Finish Per Color:
Black
(0)
Diamondback DB15 30rd 5.56 Pistol - DB15PCML7MB
Brand:
Diamondback
Action:
Semi-Auto
Barrel Length:
7"
Caliber:
5.56×45mm NATO
Capacity:
30
Finish Per Color:
Midnight Bronze
(1)
Diamondback Firearms Db15 223 Remington/556nato 16" 30rd Odg/fde Mlok
Brand:
Diamondback
Action:
Semi-Auto
Barrel Length:
16 BARREL
Caliber:
.223 Rem/5.56×45mm NATO
Capacity:
30
Finish Per Color:
OD Green
(0)
Diamondback Db15, 7.62x39mm 10" 28+1 Black
Brand:
Diamondback
Action:
Semi-Auto
Barrel Length:
10"
Caliber:
7.62x39mm
Capacity:
28+1
Finish Per Color:
Black
(0)
Diamondback DB15 Smoked Bronze 5.56 / .223 Rem 16" Barrel 30-Rounds
Brand:
Diamondback
Action:
AR
Barrel Length:
16 BARREL
Caliber:
.223 Rem/5.56×45mm NATO
Capacity:
30
Finish Per Color:
Bronze
(20)
DIAMONDBACK DB15
Brand:
Diamondback
Action:
Semi-Auto
Barrel Length:
16
Caliber:
5.56×45mm NATO
Capacity:
30
Finish Per Color:
Flat Dark Earth
(0)
Diamondback Db15, Dia Db1784k061 556 16" 30rs Mlok Fde
Brand:
Diamondback
Action:
Semi-Auto
Barrel Length:
16"
Caliber:
5.56×45mm NATO
Capacity:
30+1
Finish Per Color:
Flat Dark Earth
(0)
DIAMONDBACK DB15
Brand:
Diamondback
Action:
Semi-Auto
Barrel Length:
16"
Caliber:
.223 Rem/5.56×45mm NATO
Capacity:
30
(0)
DIAMONDBACK DB15
Brand:
Diamondback
Action:
Semi-Auto
Barrel Length:
16in
Caliber:
5.56×45mm NATO
Capacity:
30
Finish Per Color:
Black
(0)
Diamondback Firearms DB15 Rifle 300 AAC Blackout - 16" - Matte Black
Brand:
Diamondback
Action:
Semi-Auto
Barrel Length:
16in
Caliber:
.300 AAC Blackout
Capacity:
30+1
Finish Per Color:
Black
(0)
Diamondback Db15, Dia Db1784k101 556 Db15 16 30r Mlok Odg
Brand:
Diamondback
Action:
Semi-Auto
Barrel Length:
16"
Caliber:
5.56×45mm NATO
Capacity:
30+1
Finish Per Color:
OD Green
(0)
Diamondback DB15 AR15 5.56/.223 Rem 16" Barrel 30-Rounds 15" M-LOK Handguard
Brand:
Diamondback
Action:
Semi-Auto
Barrel Length:
16in
Caliber:
5.56×45mm NATO
Capacity:
30+1
Finish Per Color:
Black
(20)
Diamondback DB15 5.56NATO 16" Barrel 30-Rounds
Brand:
Diamondback
Action:
Semi-Auto
Barrel Length:
16
Caliber:
5.56×45mm NATO
Capacity:
30
Finish Per Color:
Black
(0)
Diamondback Firearms Carbon DB15 Rifle .223/5.56 - 16" - White
Brand:
Diamondback
Action:
Semi-Auto
Barrel Length:
16"
Caliber:
5.56×45mm NATO
Capacity:
30
Marketplace Insights
★ 4.7/5
based on 311 customer reviews across 223 products from 15 retailers
Exceptional value AR-15 with outstanding reliability and performance, though some users report handguard limitations and initial quality control issues.
What customers like
Excellent Value for Price45%
Great AR for the price. Lightweight, comfortable and durable.
Reliable Performance38%
I put 120 rounds straight out the box with no issues.
Quality Build & Finish22%
Fit and finish is great, kicks less than older stag arms AR
Customization Platform18%
Has a great foundation for improving and customizing upon.
Accurate Shooting15%
Shoots very accurately. The barrel shoots at least 2 MOA
Common concerns
Poor Handguard Design15%
Dont like the hand rail. Needs mlok or picatiny on top.
Initial Jamming Issues8%
When I first received the gun it jammed on me
Heavy Factory Trigger4%
the trigger pull was pretty heavy I took care of that
Customer Service Issues3%
Never buy a gun from this place horrible customer service
Frequently Asked Questions
Diamondback DB15 for sale
Is the Diamondback DB15 a good AR-15?
Diamondback DB15s are solid mil-spec AR-15s offering good value. They're accurate, lightweight, and available in multiple calibers including 5.56 NATO and .300 Blackout. Priced around $720, most shooters report reliable performance for range and home defense use.
Can a DB15 shoot 223?
Yes. DB15 rifles chambered in 5.56 NATO can safely fire .223 Remington ammunition. Check your barrel marking to confirm caliber. 5.56 NATO chambers accept .223 rounds, though the reverse isn't always true.
Can a Diamondback DB15 shoot 300 Blackout?
Yes. Diamondback offers DB15 variants specifically chambered in .300 AAC Blackout. These models feature a dedicated Blackout barrel and compatible magazine. Verify your rifle's barrel marking to confirm caliber before shooting. .300 Blackout DB15s typically cost around $720.
What is Diamondback DB15?
Diamondback DB15 is a semi-automatic AR-15 style rifle chambered in 5.56 NATO, .223 Remington, or .300 Blackout. It features 7075-T6 aluminum receivers and M-LOK handguards. Commonly used for home defense and range shooting, it retails around $720.
Is a DB15 a rifle or pistol?
The DB15 comes in both configurations. Diamondback offers rifle variants with 16-inch barrels and pistol variants with shorter barrels around 10 inches. Check the specific model's barrel length to determine which type you're considering.
How much does a Diamondback DB15 cost?
Diamondback DB15 rifles typically cost around $647, with most listings ranging from $496 to $1,189. Price varies by caliber (5.56 NATO, .223 Remington, or .300 Blackout), barrel length, and configuration.
What magazines fit Diamondback DB15?
DB15 rifles accept standard AR-15 magazines. For 5.56 NATO/.223 Remington, use aluminum GI magazines or Magpul PMAGs in 5, 10, or 30-round capacities. For .300 Blackout variants, use dedicated .300 Blackout PMAGs. Always verify your specific caliber before purchasing.
Which round, 5.56 or .223, is more powerful?
5.56 NATO runs at higher pressure, roughly 58,000 psi versus .223 Remington's 55,000 psi. Both fire the same bullet weights, but 5.56 NATO's higher pressure produces slightly more velocity and energy. The difference is modest, and .223 Remington often delivers better accuracy with match-grade ammunition.
