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.300 Blackout Barrels

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Ballistic Advantage Modern Series 300BLK AR-15 Barrel - 10"

5.0 star rating 1 Review

$156.75

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Ballistic Advantage Modern Series 300BLK AR-15 Barrel - 10.5"

$156.75

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Rainier Arms Ultramatch MOD2 300BLK AR-15 Barrel - 16" Satin

$400.00

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Rainier Arms Ultramatch MOD2 300BLK AR-15 Barrel - 16" Polished
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4.8 star rating 30488 Reviews

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Verified Reviewer

0.0 star rating

04/24/25

Review by Anonymous User

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04/24/25

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Agustin M.
Verified Buyer

5.0 star rating

04/23/25

Well made mags!

Review by Agustin M. on 23 Apr 2025 review stating Well made mags!
My son in law just got his first AR15, so $ has been a factor. I found a great price on these Hera Arms magazines so we went halves, he was so excited when he got them. Thanks Rainier, we will see you again!

On Hera Arms H3T Polymer Magazine - 30 Round Black (10 Pack)

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04/23/25

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John M.
Verified Buyer

5.0 star rating

04/23/25

Fine fit and finish

Review by John M. on 23 Apr 2025 review stating Fine fit and finish
Installed on a PTR 9KT, I had to bend the ejector arm slightly to ensure it would track into the groove of the bolt carrier. Runs great with a Hoffman kit. Installed a Magpul MOE grip, the grip needed some shaving to seat flush. Very happy with this grip housing!

On Lee Sporting Aluminum MP5 / SP5 / HK Clone Lower Housing - K Semi-Shelf

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04/23/25

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Justin T.
Verified Buyer

4.0 star rating

04/23/25

Happy

Review by Justin T. on 23 Apr 2025 review stating Happy
Only complaint is it showed up with a dead battery. Other than that, it's crisp, easy to pick up, and seems solidly built

On Atibal SLR-1 SOLAR RED DOT SIGHT

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04/23/25

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Carlos N.
Verified Buyer

5.0 star rating

04/22/25

Excellent much needed addition to the Sig P365 family of firearms

Review by Carlos N. on 22 Apr 2025 review stating Excellent much needed addition to the Sig P365 family of firearms
Excellent aluminum frame for my Sig P365 X. I am still in the process of building my all metal carry concealed firearm, but this was basic, providing with an excellent quality and functional part really needed. Kudos to Icarus!!!!

On Icarus Precision A.C.E. 365 XL Hybrid Aluminum Grip Module - Black

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04/22/25

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Brantley D.
Verified Buyer

5.0 star rating

04/22/25

Delta Rail

Review by Brantley D. on 22 Apr 2025 review stating Delta Rail
Despite Troy’s history of poor hiring choices, their Delta rail is still (IMO) one of the best upgrades ever made for the standard issue M4. Installation was easy with no permanent modifications necessary. The handguard is solid and has no play at all. I thought these had been discontinued, but somehow Rainier Arms found a couple. Great job on stocking and shipping!

On Troy Industries Battle Rail Drop-In Delta Handguard - Carbine Gas Length

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04/22/25

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$400.00

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Rainier Arms Select 300BLK AR-15 Barrel - 8"

5.0 star rating 3 Reviews

$195.00

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Rainier Arms Select 300BLK AR-15 Barrel - 6.5"

4.5 star rating 4 Reviews

$195.00

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Rainier Arms Select 300BLK AR-15 Barrel - 16"

$195.00

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V Seven Weapon Systems 300BLK AR-15 Barrel - 6.5"

4.7 star rating 7 Reviews

$329.80

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V Seven Weapon Systems 300BLK AR-15 Barrel - 5.5"

5.0 star rating 1 Review

$320.10

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Ballistic Advantage Hanson 300BLK AR-15 Barrel - 8.3"

5.0 star rating 2 Reviews

$199.50

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Faxon Firearms Match Series Gunner 300BLK AR-15 Barrel - 9"

5.0 star rating 5 Reviews

$170.20

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Ballistic Advantage Modern Series 300BLK AR-15 Barrel - 8"

$147.25

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Rainier Arms Match 300BLK AR-15 Barrel - 10.5"

5.0 star rating 1 Review

$260.00

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Rainier Arms Match 300BLK AR-15 Barrel - 14.5"

$260.00

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Rainier Arms Match 300BLK AR-15 Barrel - 16"

$260.00

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Rainier Arms Match 300BLK AR-15 Barrel - 8.5"

$260.00

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