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Rainier Arms AR Match 300BLK Barrel w/ Free Shipping — 5 models

Rainier Arms Match 300BLK Barrel, 16in, 1-8 Twist, 5/8x24, Silver, Medium, RAB-M-300-16-P-NF-SAT
Rainier Arms Match 300BLK Barrel, 14.5in, 1-8 Twist, 5/8x24, Silver, Small, RAB-M-300-145-P-NF-SAT
Rainier Arms Match 300BLK Barrel, 10.5in, 1-8 Twist, 5/8x24, Silver, Small, RAB-M-300-105-P-NF-SAT
Rainier Arms Match 300BLK Barrel, 8.5in, 1-8 Twist, 5/8x24, Silver, Small, RAB-M-300-85-P-NF-SAT
Rainier Arms Match 300BLK Barrel, 16in, 1-8 Twist, 5/8x24, Silver, Medium, RAB-M-300-16-P-NF-SAT
Rainier Arms Match 300BLK Barrel, 16in, 1-8 Twist, 5/8x24, Silver, Medium, RAB-M-300-16-P-NF-SAT
Rainier Arms Match 300BLK Barrel, 16in, 1-8 Twist, 5/8x24, Silver, Medium, RAB-M-300-16-P-NF-SAT
Rainier Arms Match 300BLK Barrel, 16in, 1-8 Twist, 5/8x24, Silver, Medium, RAB-M-300-16-P-NF-SAT
Rainier Arms Match 300BLK Barrel, 16in, 1-8 Twist, 5/8x24, Silver, Medium, RAB-M-300-16-P-NF-SAT
Rainier Arms Match 300BLK Barrel, 14.5in, 1-8 Twist, 5/8x24, Silver, Small, RAB-M-300-145-P-NF-SAT
Rainier Arms Match 300BLK Barrel, 14.5in, 1-8 Twist, 5/8x24, Silver, Small, RAB-M-300-145-P-NF-SAT
Rainier Arms Match 300BLK Barrel, 14.5in, 1-8 Twist, 5/8x24, Silver, Small, RAB-M-300-145-P-NF-SAT
Rainier Arms Match 300BLK Barrel, 14.5in, 1-8 Twist, 5/8x24, Silver, Small, RAB-M-300-145-P-NF-SAT
Rainier Arms Match 300BLK Barrel, 14.5in, 1-8 Twist, 5/8x24, Silver, Small, RAB-M-300-145-P-NF-SAT
Rainier Arms Match 300BLK Barrel, 10.5in, 1-8 Twist, 5/8x24, Silver, Small, RAB-M-300-105-P-NF-SAT
Rainier Arms Match 300BLK Barrel, 10.5in, 1-8 Twist, 5/8x24, Silver, Small, RAB-M-300-105-P-NF-SAT
Rainier Arms Match 300BLK Barrel, 10.5in, 1-8 Twist, 5/8x24, Silver, Small, RAB-M-300-105-P-NF-SAT
Rainier Arms Match 300BLK Barrel, 10.5in, 1-8 Twist, 5/8x24, Silver, Small, RAB-M-300-105-P-NF-SAT
Rainier Arms Match 300BLK Barrel, 10.5in, 1-8 Twist, 5/8x24, Silver, Small, RAB-M-300-105-P-NF-SAT
Rainier Arms Match 300BLK Barrel, 8.5in, 1-8 Twist, 5/8x24, Silver, Small, RAB-M-300-85-P-NF-SAT
Rainier Arms Match 300BLK Barrel, 8.5in, 1-8 Twist, 5/8x24, Silver, Small, RAB-M-300-85-P-NF-SAT
Rainier Arms Match 300BLK Barrel, 8.5in, 1-8 Twist, 5/8x24, Silver, Small, RAB-M-300-85-P-NF-SAT
Rainier Arms Match 300BLK Barrel, 8.5in, 1-8 Twist, 5/8x24, Silver, Small, RAB-M-300-85-P-NF-SAT
Rainier Arms Match 300BLK Barrel, 8.5in, 1-8 Twist, 5/8x24, Silver, Small, RAB-M-300-85-P-NF-SAT
Rainier Arms Match 300BLK Barrel, 16in, 1-8 Twist, 5/8x24, Silver, Medium, RAB-M-300-16-P-NF-SAT
1 of 24 images
Rainier Arms Match 300BLK Barrel, 16in, 1-8 Twist, 5/8x24, Silver, Medium, RAB-M-300-16-P-NF-SAT
Rainier Arms Match 300BLK Barrel, 14.5in, 1-8 Twist, 5/8x24, Silver, Small, RAB-M-300-145-P-NF-SAT
2 of 24 images
Rainier Arms Match 300BLK Barrel, 14.5in, 1-8 Twist, 5/8x24, Silver, Small, RAB-M-300-145-P-NF-SAT
Rainier Arms Match 300BLK Barrel, 10.5in, 1-8 Twist, 5/8x24, Silver, Small, RAB-M-300-105-P-NF-SAT
3 of 24 images
Rainier Arms Match 300BLK Barrel, 10.5in, 1-8 Twist, 5/8x24, Silver, Small, RAB-M-300-105-P-NF-SAT
Rainier Arms Match 300BLK Barrel, 8.5in, 1-8 Twist, 5/8x24, Silver, Small, RAB-M-300-85-P-NF-SAT
4 of 24 images
Rainier Arms Match 300BLK Barrel, 8.5in, 1-8 Twist, 5/8x24, Silver, Small, RAB-M-300-85-P-NF-SAT
Rainier Arms Match 300BLK Barrel, 16in, 1-8 Twist, 5/8x24, Silver, Medium, RAB-M-300-16-P-NF-SAT
5 of 24 images
Rainier Arms Match 300BLK Barrel, 16in, 1-8 Twist, 5/8x24, Silver, Medium, RAB-M-300-16-P-NF-SAT
Rainier Arms Match 300BLK Barrel, 16in, 1-8 Twist, 5/8x24, Silver, Medium, RAB-M-300-16-P-NF-SAT
6 of 24 images
Rainier Arms Match 300BLK Barrel, 16in, 1-8 Twist, 5/8x24, Silver, Medium, RAB-M-300-16-P-NF-SAT
Rainier Arms Match 300BLK Barrel, 16in, 1-8 Twist, 5/8x24, Silver, Medium, RAB-M-300-16-P-NF-SAT
7 of 24 images
Rainier Arms Match 300BLK Barrel, 16in, 1-8 Twist, 5/8x24, Silver, Medium, RAB-M-300-16-P-NF-SAT
Rainier Arms Match 300BLK Barrel, 16in, 1-8 Twist, 5/8x24, Silver, Medium, RAB-M-300-16-P-NF-SAT
8 of 24 images
Rainier Arms Match 300BLK Barrel, 16in, 1-8 Twist, 5/8x24, Silver, Medium, RAB-M-300-16-P-NF-SAT
Rainier Arms Match 300BLK Barrel, 16in, 1-8 Twist, 5/8x24, Silver, Medium, RAB-M-300-16-P-NF-SAT
9 of 24 images
Rainier Arms Match 300BLK Barrel, 16in, 1-8 Twist, 5/8x24, Silver, Medium, RAB-M-300-16-P-NF-SAT
Rainier Arms Match 300BLK Barrel, 14.5in, 1-8 Twist, 5/8x24, Silver, Small, RAB-M-300-145-P-NF-SAT
10 of 24 images
Rainier Arms Match 300BLK Barrel, 14.5in, 1-8 Twist, 5/8x24, Silver, Small, RAB-M-300-145-P-NF-SAT
Rainier Arms Match 300BLK Barrel, 14.5in, 1-8 Twist, 5/8x24, Silver, Small, RAB-M-300-145-P-NF-SAT
11 of 24 images
Rainier Arms Match 300BLK Barrel, 14.5in, 1-8 Twist, 5/8x24, Silver, Small, RAB-M-300-145-P-NF-SAT
Rainier Arms Match 300BLK Barrel, 14.5in, 1-8 Twist, 5/8x24, Silver, Small, RAB-M-300-145-P-NF-SAT
12 of 24 images
Rainier Arms Match 300BLK Barrel, 14.5in, 1-8 Twist, 5/8x24, Silver, Small, RAB-M-300-145-P-NF-SAT
Rainier Arms Match 300BLK Barrel, 14.5in, 1-8 Twist, 5/8x24, Silver, Small, RAB-M-300-145-P-NF-SAT
13 of 24 images
Rainier Arms Match 300BLK Barrel, 14.5in, 1-8 Twist, 5/8x24, Silver, Small, RAB-M-300-145-P-NF-SAT
Rainier Arms Match 300BLK Barrel, 14.5in, 1-8 Twist, 5/8x24, Silver, Small, RAB-M-300-145-P-NF-SAT
14 of 24 images
Rainier Arms Match 300BLK Barrel, 14.5in, 1-8 Twist, 5/8x24, Silver, Small, RAB-M-300-145-P-NF-SAT
Rainier Arms Match 300BLK Barrel, 10.5in, 1-8 Twist, 5/8x24, Silver, Small, RAB-M-300-105-P-NF-SAT
15 of 24 images
Rainier Arms Match 300BLK Barrel, 10.5in, 1-8 Twist, 5/8x24, Silver, Small, RAB-M-300-105-P-NF-SAT
Rainier Arms Match 300BLK Barrel, 10.5in, 1-8 Twist, 5/8x24, Silver, Small, RAB-M-300-105-P-NF-SAT
16 of 24 images
Rainier Arms Match 300BLK Barrel, 10.5in, 1-8 Twist, 5/8x24, Silver, Small, RAB-M-300-105-P-NF-SAT
Rainier Arms Match 300BLK Barrel, 10.5in, 1-8 Twist, 5/8x24, Silver, Small, RAB-M-300-105-P-NF-SAT
17 of 24 images
Rainier Arms Match 300BLK Barrel, 10.5in, 1-8 Twist, 5/8x24, Silver, Small, RAB-M-300-105-P-NF-SAT
Rainier Arms Match 300BLK Barrel, 10.5in, 1-8 Twist, 5/8x24, Silver, Small, RAB-M-300-105-P-NF-SAT
18 of 24 images
Rainier Arms Match 300BLK Barrel, 10.5in, 1-8 Twist, 5/8x24, Silver, Small, RAB-M-300-105-P-NF-SAT
Rainier Arms Match 300BLK Barrel, 10.5in, 1-8 Twist, 5/8x24, Silver, Small, RAB-M-300-105-P-NF-SAT
19 of 24 images
Rainier Arms Match 300BLK Barrel, 10.5in, 1-8 Twist, 5/8x24, Silver, Small, RAB-M-300-105-P-NF-SAT
Rainier Arms Match 300BLK Barrel, 8.5in, 1-8 Twist, 5/8x24, Silver, Small, RAB-M-300-85-P-NF-SAT
20 of 24 images
Rainier Arms Match 300BLK Barrel, 8.5in, 1-8 Twist, 5/8x24, Silver, Small, RAB-M-300-85-P-NF-SAT
Rainier Arms Match 300BLK Barrel, 8.5in, 1-8 Twist, 5/8x24, Silver, Small, RAB-M-300-85-P-NF-SAT
21 of 24 images
Rainier Arms Match 300BLK Barrel, 8.5in, 1-8 Twist, 5/8x24, Silver, Small, RAB-M-300-85-P-NF-SAT
Rainier Arms Match 300BLK Barrel, 8.5in, 1-8 Twist, 5/8x24, Silver, Small, RAB-M-300-85-P-NF-SAT
22 of 24 images
Rainier Arms Match 300BLK Barrel, 8.5in, 1-8 Twist, 5/8x24, Silver, Small, RAB-M-300-85-P-NF-SAT
Rainier Arms Match 300BLK Barrel, 8.5in, 1-8 Twist, 5/8x24, Silver, Small, RAB-M-300-85-P-NF-SAT
23 of 24 images
Rainier Arms Match 300BLK Barrel, 8.5in, 1-8 Twist, 5/8x24, Silver, Small, RAB-M-300-85-P-NF-SAT
Rainier Arms Match 300BLK Barrel, 8.5in, 1-8 Twist, 5/8x24, Silver, Small, RAB-M-300-85-P-NF-SAT
24 of 24 images
Rainier Arms Match 300BLK Barrel, 8.5in, 1-8 Twist, 5/8x24, Silver, Small, RAB-M-300-85-P-NF-SAT

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Questions & Answers
Can this barrel be pin and welded?

Yes...I just had mine done via local shooting range Gunsmith.

by Mike, Verified Owner, February 20, 2025
View All Q&A You Have a Question? Ask!
Customer Reviews
Helpful Positive Review
Excellent Barrel by Mike, Verified Owner, February 27, 2025
I used this barrel (14.5 inch version) in a new 300 Blackout Build, and have found it to be an Excellent Barrel so far. Have only put about 100 rounds thru the barrel on my local 100 yard range and the barrel has tested both reliable and accurate so ...
Read More...
1/1 found this helpful
Helpful Negative Review
Threads were not 5/8 as advertised by Bdub, Verified Owner, August 7, 2025
I got this barrel to go from carbine length to pistol length gas to soley run subsonic suppressed. I installed the barrel the gas block and shroud and went to put the suppressor on and it was a no go. My old $80 Bear Creek Arsenal barrel was 5/8×24 t...
Read More...
2/2 found this helpful
Read All 2 Reviews

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Product Info for Rainier Arms AR Match 300BLK Barrel

Many have asked them to build a barrel with the same workmanship as their UltraMatch barrels while keeping it more affordable. They are able to reach their goal by sourcing a very high end barrel blank at an affordable price. They start off using a high precision match blank in 1:8 twist, machine it to the highest quality, you have a barrel that is the best value, hands down, in the industry.image

Specifications for Rainier Arms AR Match 300BLK Barrel:

Manufacturer: Rainier Arms
Color: Silver
Finish: Bead Blasted
Fabric/Material: Stainless Steel
Caliber: .300 AAC Blackout
Barrel Profile: M4
Gas System Length: Pistol Length
Gas Block Journal Size-Diameter: .750 in
Barrel Twist Rate: 1-8
Gun Make: AR Platform
Gun Model: AR-15
Firearms Threads Per Inch: 5/8x24

Package Contents:

  • Rainier Arms Match 300BLK Barrel

What firearm models does the manufacturer say Rainier Arms AR Match 300BLK Barrel is compatible with?

The manufacturer says that Rainier Arms AR Match 300BLK Barrel is compatible with AR-15

Rainier Arms AR Match 300BLK Barrel Orderable Models

List of Orderable Models

  • Rainier Arms Match 300BLK Barrel, 14.5in, 1-8 Twist, 5/8x24, Silver, Small, RAB-M-300-145-P-NF-SAT , MPN: RAB-M-300-145-P-NF-SAT , UPC: 744985351190 , Code: 4ZM-ATB-CPO16-RAB-M-300-145-P-NF-SAT
  • Rainier Arms Match 300BLK Barrel, 10.5in, 1-8 Twist, 5/8x24, Silver, Small, RAB-M-300-105-P-NF-SAT , MPN: RAB-M-300-105-P-NF-SAT , UPC: 744985351183 , Code: 4ZM-ATB-CPO16-RAB-M-300-105-P-NF-SAT
  • DEMO, Rainier Arms Match 300BLK Barrel, 10.5in, 1-8 Twist, 5/8x24, Silver, Small, RAB-M-300-105-P-NF-SAT , MPN: RAB-M-300-105-P-NF-SAT-DEMO , Code: 4ZM-ATB-CPO16-RAB-M-300-105-P-NF-SAT-DEMO-OB-A
  • Rainier Arms Match 300BLK Barrel, 16in, 1-8 Twist, 5/8x24, Silver, Medium, RAB-M-300-16-P-NF-SAT , MPN: RAB-M-300-16-P-NF-SAT , UPC: 744985351206 , Code: 4ZM-ATB-CPO16-RAB-M-300-16-P-NF-SAT
  • Rainier Arms Match 300BLK Barrel, 8.5in, 1-8 Twist, 5/8x24, Silver, Small, RAB-M-300-85-P-NF-SAT , MPN: RAB-M-300-85-P-NF-SAT , UPC: 744985351176 , Code: 4ZM-ATB-CPO16-RAB-M-300-85-P-NF-SAT
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