Other sites say this gun will shoot both 300 blackout and 300 whisper. Can you shoot 3oo whisper with this?

The Whisper can be loaded longer (more freebore in a Whisper chamber) so it may cause high pressures if fired in a rifle specifically chambered for the 330 Blackout. If the gun is chambered and marked for both it is okay.

Ryan, the 300 Whisper will chamber and fire. However, for safety and warranty reasons I would get the advice of the firearm manufacturer. Some excellent details on your question here : https://www.thetruthaboutguns.com/2011/12/foghorn/ask-foghorn-is-it-safe-to-fire-300-whisper-in-a-300-aac-blackout-firearm/

What kind of buffer tube dose this gun have?

Shannon, this rifle has an ATI Strikeforce buttstock and "Commercial" buffer tube with a 9.5" Diamondback aluminum M-LOK rail handguard and A2-style pistol grip.

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Diamondback Firearms DB15 .300 Black 16 KMOD 30RD Black - 16" Barrel, 30 Rounds

Name: Diamondback Firearms DB15 .300 Black 16 KMOD 30RD Black
Brand: Diamondback Firearms
SKU: 33302
Availability: OutOfStock
Rating: 4.80 (9 reviews)

9 Reviews| 2 Questions & Answers

Model: DB15CCKM300B

Condition: Factory New

Bud's Item Number: 33302

UPC: 815875014225

MFG: Diamondback Firearms

Questions & Answers (2) Reviews 4.8 out of 5

Diamondback Firearms DB15 .300 Black 16 KMOD 30RD Black

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FAMILY:DB15 Series
MODEL:DB-15 CCKM
TYPE:Rifle
ACTION:Semi-Auto
FINISH:Black Anodize
STOCK/FRAME:Alloy Frame

CALIBER/GAUGE:300 AAC Blackout
CAPACITY:30+1
BARREL:16"

SIGHTS:None
ADDL INFO:12" Keymod Rail

Product Information

Action

Semi-Auto

Caliber

300 AAC Blackout

Barrel Length

Capacity

Length of Pull

N/A

OUT OF STOCK

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Retail Store Availability

In-Store Purchase Only
Lexington, KY	Not in store
Greenville, KY	Not in store
Sevierville, TN	Not in store

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Diamondback Firearms DB15 .300 Black 16 KMOD 30RD Black

Model DB15CCKM300B	Condition Factory New
Bud's Item # 33302	UPC 815875014225
Manufacturer Diamondback Firearms

FAMILY:DB15 Series
MODEL:DB-15 CCKM
TYPE:Rifle
ACTION:Semi-Auto
FINISH:Black Anodize
STOCK/FRAME:Alloy Frame

CALIBER/GAUGE:300 AAC Blackout
CAPACITY:30+1
BARREL:16"

SIGHTS:None
ADDL INFO:12" Keymod Rail

Operators Manual

9 Reviews. 4.8 out of 5 Stars!

5 Stars

78%

4 Stars

23%

3 Stars

2 Stars

1 Star

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Chad B on 03/28/2023

Rating: 5 of 5 Stars!

I’ve put 200 rds down range and haven’t had a hiccup yet. Smith shooting and plenty of punch. Absolutely love this thing! Thank you buds!

Herbert S on 01/30/2023

Rating: 5 of 5 Stars!

Very satisfied with this rifle. Trigger is heavy and creepy but I got used to it quickly! Put a red dot on it and it ran great! For the price, it's hard to beat for a general purpose AR!

Jose M M on 03/22/2022

Rating: 5 of 5 Stars!

As I wanted and the shipping was good. Thanks

Darryl G on 05/03/2021

Rating: 4 of 5 Stars!

Love my guns I purchased from Budsgunshop, my Diamondback db15 300 blackout and my Taurus G3 9mm. I received both shipments an decent time frame

Jacob L on 04/08/2021

Rating: 5 of 5 Stars!

Fast shipping! Excellent purchase!

Bruce W on 03/16/2020

Rating: 5 of 5 Stars!

Very satisfied and happy with my purchase from Bud's. Customer service was outstanding from the beginning til today. I will be seeing and purchasing from Bud's again! Thank you for serving me.

David D on 09/23/2019

Rating: 5 of 5 Stars!

Love my new Diamondback .300 AAC Blackout. Couldn't beat the price. Great quality. My buddies want one for themselves now. Extremely happy with my purchase.

Bobby S on 09/12/2018

Rating: 5 of 5 Stars!

Very happy with this gun . Looks good shoots great very satisfied.

Ryan S. B on 12/12/2017

Rating: 4 of 5 Stars!

Overall a good value, but there are a couple things I’d like to point out that could have earned a higher rating in my book. The anodizing/finish of the handguard is glossy and does not match the receiver/lower. Also, the picatinny rail does not align perfectly with the upper receiver, it is off by approx 1mm on both sides, but is centered. The flash hider and forward assist are poorly coated, almost look used. I have yet to have a chance to fire the rifle, which should be noted. This review only covers initial inspection.

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Questions & Answers

Q: Other sites say this gun will shoot both 300 blackout and 300 whisper. Can you shoot 3oo whisper with this?
Answered

Asked 03/10/2019 17:52 by ryan s

A:

The Whisper can be loaded longer (more freebore in a Whisper chamber) so it may cause high pressures if fired in a rifle specifically chambered for the 330 Blackout. If the gun is chambered and marked for both it is okay.
See 1 more answer |
Q: What kind of buffer tube dose this gun have?
Answered

Asked 11/26/2018 23:16 by Shannon S

A:

Shannon, this rifle has an ATI Strikeforce buttstock and "Commercial" buffer tube with a 9.5" Diamondback aluminum M-LOK rail handguard and A2-style pistol grip.