JavaScript seems to be disabled in your browser. For the best experience on our site, be sure to turn on Javascript in your browser.

Father's Day Appreciation - 12% OFF Sitewide

*Some Exclusions Apply, EXCLUDES DEALERS & DISTRIBUTORS, DISCOUNTS DO NOT STACK, DISCOUNT APPLIED AT CHECKOUT (SALE GOOD FROM 6/11-6/16) EXCLUDES: ATLAS, KUSTOMWORX, LAUGO ARMS, LMT, NIGHTHAWK, STACCATO, TTI PIT VIPER

Rainier Arms

Pursue Your Passion

Menu

Account

Home
Rifle Parts
Barrels
AR-15 Barrels
.300 Blackout Barrels

.300 Blackout Barrels

Shop all .300 Blackout barrels

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

$400.00
Starting at 0% APR or $73.83/mo with . Learn More

Add to Wish List Add to Compare
Rainier Arms Match 300BLK AR-15 Barrel - 14.5" Nitride
★ Reviews

Popup content starts

Reviews by

close Popup

These are real reviews
from real shoppers

4.8 star rating 30606 Reviews

Site Reviews

Product Reviews

WRITE A REVIEW

* Indicates a required field

* Score:

* Title:

* Review:

You are connected as

Connect with:

-OR-

* Use your name:

* Email:

Review's title & body can't be empty Question's body can't be empty Please enter a star rating for this review Name field cannot be empty Invalid email Your review has already been submitted. Max length was exceeded Please fill out all of the mandatory (*) fields One or more of your answers does not meet the required criteria

Thank you for posting a review!

We value your input. Share your review so everyone else can enjoy it too.

share

share

share

Thank you for posting a review!

Your review was sent successfully and is now waiting for our staff to publish it.

Verified Reviewer

0.0 star rating

06/12/25

Review by Anonymous User

On

share ' Share Review by Anonymous User facebook facebook Share Review by Anonymous User twitter twitter Share Review by Anonymous User LinkedIn linkedin Share Review by Anonymous User

06/12/25

Was this review helpful?

0

0

C
Chris A.
Verified Reviewer

5.0 star rating

06/11/25

Top 1X Prism

Review by Chris A. on 11 Jun 2025 review stating Top 1X Prism
For the money you pay, you wont beat this beast. Crystal clear, large sight picture, and holds zero reeeaaalll nice. As long as you aren’t a potato, you’ll hit everything you aim at with it within 100yards, and I was constantly on steel (12in x 12in) with it at 200yards.

Lifetime warranty? Are you kidding?

Just run this, and thank me later.

Also, Rainer Arms, can’t go wrong with this great company.

On Atibal P1 Solar 1x Motion Activated Micro Prism Optic

share ' Share Review by Chris A. on 11 Jun 2025 facebook facebook Share Review by Chris A. on 11 Jun 2025 twitter twitter Share Review by Chris A. on 11 Jun 2025 LinkedIn linkedin Share Review by Chris A. on 11 Jun 2025

06/11/25

Was this review helpful?

1

0

K
Kevin A.
Verified Buyer

5.0 star rating

06/07/25

Barrel nut.

Review by Kevin A. on 7 Jun 2025 review stating Barrel nut.
Looks good works great

On V Seven Weapon Systems Titanium GI Barrel Nut

share ' Share Review by Kevin A. on 7 Jun 2025 facebook facebook Share Review by Kevin A. on 7 Jun 2025 twitter twitter Share Review by Kevin A. on 7 Jun 2025 LinkedIn linkedin Share Review by Kevin A. on 7 Jun 2025

06/07/25

Was this review helpful?

0

0

M
Mic N.
Verified Buyer

5.0 star rating

06/05/25

Perfect

Review by Mic N. on 5 Jun 2025 review stating Perfect
Best investment for magazine made to my AR

On Driven Arms Co. AR15 Standard Forged Slip Fit Magwell

share ' Share Review by Mic N. on 5 Jun 2025 facebook facebook Share Review by Mic N. on 5 Jun 2025 twitter twitter Share Review by Mic N. on 5 Jun 2025 LinkedIn linkedin Share Review by Mic N. on 5 Jun 2025

06/05/25

Was this review helpful?

0

0

C
CB
Verified Reviewer

5.0 star rating

06/05/25

It do be saying "compact" in the name

Review by CB on 5 Jun 2025 review stating It do be saying "compact" in the name
If you get a compact grip and don't like that it's compact idk what to tell you lol. This grip is exactly as described and looks cool.

On Driven Arms Co. Utility Compact Grip (ULCG Gen 2) - Apex

share ' Share Review by CB on 5 Jun 2025 facebook facebook Share Review by CB on 5 Jun 2025 twitter twitter Share Review by CB on 5 Jun 2025 LinkedIn linkedin Share Review by CB on 5 Jun 2025

06/05/25

Was this review helpful?

0

0

R
Rodney S.
Verified Buyer

5.0 star rating

06/04/25

Hmm

Review by Rodney S. on 4 Jun 2025 review stating Hmm
Works well so far

On KCI USA AR-15 Polymer Magazine - 30rd (10 Pack)

share ' Share Review by Rodney S. on 4 Jun 2025 facebook facebook Share Review by Rodney S. on 4 Jun 2025 twitter twitter Share Review by Rodney S. on 4 Jun 2025 LinkedIn linkedin Share Review by Rodney S. on 4 Jun 2025

06/04/25

Was this review helpful?

0

0

1 2 3 4 5 6 7 8 9

Reviews by

Popup content ends
$260.00
Four Payments of $65.00 with . Learn More

Add to Wish List Add to Compare
V Seven Weapon Systems 300BLK AR-15 Barrel - 6.5"

4.7 star rating 7 Reviews

$329.80
Starting at 0% APR or $60.87/mo with . Learn More

Add to Wish List Add to Compare
V Seven Weapon Systems 300BLK AR-15 Barrel - 5.5"

5.0 star rating 1 Review

$320.10
Starting at 0% APR or $59.08/mo with . Learn More

Add to Wish List Add to Compare
Ballistic Advantage Hanson 300BLK AR-15 Barrel - 8.3"

5.0 star rating 2 Reviews

$199.50
Four Payments of $49.88 with . Learn More

Add to Wish List Add to Compare
Ballistic Advantage Modern Series 300BLK AR-15 Barrel - 8"

$147.25

Add to Wish List Add to Compare
Rainier Arms Match 300BLK AR-15 Barrel - 14.5"

$260.00
Four Payments of $65.00 with . Learn More

Add to Wish List Add to Compare
Rainier Arms Match 300BLK AR-15 Barrel - 16" Nitride

5.0 star rating 2 Reviews

$260.00
Four Payments of $65.00 with . Learn More

Add to Wish List Add to Compare
Rainier Arms Match 300BLK AR-15 Barrel - 10.5"

5.0 star rating 1 Review

$260.00
Four Payments of $65.00 with . Learn More

Add to Wish List Add to Compare
Rainier Arms Match 300BLK AR-15 Barrel - 16"

$260.00
Four Payments of $65.00 with . Learn More

Add to Wish List Add to Compare
Rainier Arms Match 300BLK AR-15 Barrel - 8.5"

$260.00
Four Payments of $65.00 with . Learn More

Add to Wish List Add to Compare
Faxon Firearms Match Series Gunner 300BLK AR-15 Barrel - 9"

5.0 star rating 5 Reviews

$170.20
Four Payments of $42.55 with . Learn More

Add to Wish List Add to Compare
Rainier Arms Select 300BLK AR-15 Barrel - 8"

5.0 star rating 3 Reviews

$195.00
Four Payments of $48.75 with . Learn More

Add to Wish List Add to Compare
Rainier Arms Select 300BLK AR-15 Barrel - 6.5"

4.5 star rating 4 Reviews

$195.00
Four Payments of $48.75 with . Learn More

Add to Wish List Add to Compare
Rainier Arms Ultramatch MOD2 300BLK AR-15 Barrel - 10" Satin

$400.00
Starting at 0% APR or $73.83/mo with . Learn More

Add to Wish List Add to Compare
Ballistic Advantage Modern Series 300BLK AR-15 Barrel - 10"

5.0 star rating 1 Review

$156.75
Four Payments of $39.19 with . Learn More

Add to Wish List Add to Compare

Shopping Options

My Wish List

Last Added Items

You have no items in your wish list.

Google Customer Reviews

Google Customer Reviews