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Starline Brass 300Blkeup100 Unprimed Cases 300 Blackout Rifle Brass 100 Per Bag

Starline Brass 300BLKEUP100 Unprimed Cases 300 Blackout Rifle Brass 100 Per Bag

Maufacturer:

Starline

UPC:

810742022679

MPN:

300BLKEUP100

$43.00

In stock

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Details

The .300 Blackout is based off of a shortened 5.56x45mm case that is necked to .30 caliber. For AR-15 platform rifles and pistols it only requires changing the barrel to go from 5.56 to .300 Blackout. The Blackout’s main purpose is to be used at subsonic velocities in suppressed firearms. Many bolt action and single shot rifles are now being produced in this caliber as well.

Starline Brass 300BLKEUP100 Unprimed Cases 300 Blackout Rifle Brass 100 Per Bag

Specifications

Additional information

UPC

810742022679
Manufacturer

Starline
Manufacturer Part Number

300BLKEUP100
Caliber/Gauge

300 AAC Blackout/Whisper (7.63x35mm)
Length

1.356"-1.360"
Quantity

100 Per Bag
Style

Small
Product Type

Rifle

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Elk River Guns
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Joyce Treulieb
22:34 05 Jun 25
Amazing!
Michael Kusy
20:21 03 Jun 25
Always a great experience at Elk River Guns!
Jeff Von Almen
22:21 20 May 25
David was great!
Jarrod Raper
21:38 19 May 25
Staff helps with every step of the process and make sure you know what is going on! They are super informative. Great people.
Timothy Moorehead
19:56 17 May 25
Always helpful and good stock!
Stephen Failla
16:56 13 May 25
Dan Emert
15:20 12 May 25
These folks run an impressive operation and are great at everything they do. Highly, highly recommend.
Joel Harris
22:07 09 May 25
Friendly helpful & very well informed. Competitive pricing.
David Smith
17:30 07 May 25
Just got another brick of Hornady 17 HMR 15.5 gr. NTX. It gives exceptional accuracy at 100 yards, is devastatingly lethal on ground squirrels, and doesn’t poison the raptors.
DAVE MIHAICH
19:31 04 May 25
Always a pleasure at Elk River Guns!!👍🏻
Dakota Thvedt
11:02 03 May 25
Alan Clemens
23:02 02 May 25
Great and friendly service as always!
Eric Edelstein
22:33 17 Apr 25
Danny Hulslander
23:13 15 Apr 25
I've had nothing but good experiences with these guys!! Whether it's buying a new firearm, getting some gunsmithing done or selling/trading in a used firearm, they make it an easy and welcoming experience! Thanks guys!
Bob Forster
19:40 09 Apr 25
Great service. Jae made some great recommendations. Very happy with resuling product purchased.
Kasen Brennise
18:13 08 Apr 25
lawrence Belton
13:37 01 Apr 25
Heath Scroggs
00:19 27 Mar 25
Everyone was really excited to help one out!! An amazing environment!!
Mikey DeRock
22:40 25 Mar 25
Everything in house seems to be awesome, staff is friendly and helpful, you could sit and talk to everyone for far too long!

Waited a bit too long getting a barrel threaded, but that is not done in house and by a sub contractor.

Everything in house from customer service to selection was wonderful, I will be bringing my buisness back again!
Frances Jenkins
01:34 19 Mar 25
Very friendly and extremely knowledgeable staff.
Juan Landa
18:02 10 Mar 25
Wonderful service and great people!
Ron Mentch
22:33 07 Mar 25
Very friendly and helpful!
Sharon Cantu
00:17 02 Mar 25
Friendly & kind , Great customer services . Took the time to explain their products to me . Recommend for everyone to go check them out. Thank you for all your help .
Dave Chapin
21:51 28 Feb 25
As always, great service, very happy with my purchase. Definitely my go to store for anything gun related. Thanks elk river!
Jeff Jewson
04:39 28 Feb 25
Cannon Balls
23:23 27 Feb 25
Best store in town. Knowledgeable Smart people. Best store in Colorado as far as I know.
Donna Segale
22:14 22 Feb 25
I needed to get rid of these guns my husband had that I discovered after he passed. I am not used to being around guns and a bit nervous around them. Everyone at the store were very nice and gave me a fair price for them. The 2 dogs were also sweet.
I would highly recommend them.
Scott Baraw
04:06 22 Feb 25
Elk River Guns is like family! They are knowledgeable and understanding for all your gun related needs. Jae the owner is willing to go the extra mile to make sure you are happy with your purchase/future purchases. Dave has impeccable memory. He remembers everyone’s name and welcomes you by name with a warm smile when you walk through the door. Other shops employees just want to take your money any way how. These guys are there to make your day better. They are my number one gun store in my books.Best in the northwest!
Chris H
23:22 13 Feb 25
Jae and Elk River was my go to FFL before I moved away from Steamboat. Just bought a few products from them even though I now live across the country. Elk River was responsive, shipped my product quickly in a well packaged box. Transaction was seamless. Will continue to do business with Jae and Elk River Guns.
Ralph Torres
23:09 12 Feb 25
Very knowledgeable employees in this store ifthey don’t have it. They will order it for you. I’ve never had a bad experience with elk River guns
C Young
07:55 24 Oct 24
Can’t recommend them enough. A lot of gun shops have shady salesman or condescending staff, and it’s the opposite here. David (Mr. Smith) is just the most welcoming warm person to have greet you and guide you through any of your needs. He’s downright hilarious too! Jae is the wizard you can trust with all your gunsmithing needs and is obviously effortlessly knowledgeable with any and everything guns. He has both fixed my broken handgun and mounted an optic within 10 minutes of walking in the store while charging a very fair price. Just crazy levels of service that’s so rare nowadays. Tip this man he deserves it. They have a great selection of guns/parts and transfers, though on the expensive side for transfers, (you’re in steamboat, don’t be unrealistic), are a breeze. In small towns like this we are lucky to have shop of this caliber (pun intended).
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Elk River Guns
1320 Dream Island Plaza
Steamboat Springs, CO 80487

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