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Rainier Arms AR Select 9mm Barrel Up to 37% Off w/ Free Shipping — 4 models

Rainier Arms Select 9mm Barrel, 6in, 1-10 Twist, 1/2x28, Black, Small, RAB-SEL-9MM-6-NF-BLK
Rainier Arms Select 9mm Barrel, 10.7in, 1-10 Twist, 1/2x28, Black, Small, RAB-SEL-9MM-107-NF-BLK
Rainier Arms Select 9mm Barrel, 16in, 1-10 Twist, 1/2x28, Black, Medium, RAB-SEL-9MM-16-NF-BLK
Rainier Arms Select 9mm Barrel, 4in, 1-10 Twist, 1/2x28, Black, Small, RAB-SEL-9MM-4-NF-BLK
Rainier Arms Select 9mm Barrel, 6in, 1-10 Twist, 1/2x28, Black, Small, RAB-SEL-9MM-6-NF-BLK
Rainier Arms Select 9mm Barrel, 6in, 1-10 Twist, 1/2x28, Black, Small, RAB-SEL-9MM-6-NF-BLK
Rainier Arms Select 9mm Barrel, 6in, 1-10 Twist, 1/2x28, Black, Small, RAB-SEL-9MM-6-NF-BLK
Rainier Arms Select 9mm Barrel, 6in, 1-10 Twist, 1/2x28, Black, Small, RAB-SEL-9MM-6-NF-BLK
Rainier Arms Select 9mm Barrel, 10.7in, 1-10 Twist, 1/2x28, Black, Small, RAB-SEL-9MM-107-NF-BLK
Rainier Arms Select 9mm Barrel, 10.7in, 1-10 Twist, 1/2x28, Black, Small, RAB-SEL-9MM-107-NF-BLK
Rainier Arms Select 9mm Barrel, 10.7in, 1-10 Twist, 1/2x28, Black, Small, RAB-SEL-9MM-107-NF-BLK
Rainier Arms Select 9mm Barrel, 10.7in, 1-10 Twist, 1/2x28, Black, Small, RAB-SEL-9MM-107-NF-BLK
Rainier Arms Select 9mm Barrel, 16in, 1-10 Twist, 1/2x28, Black, Medium, RAB-SEL-9MM-16-NF-BLK
Rainier Arms Select 9mm Barrel, 16in, 1-10 Twist, 1/2x28, Black, Medium, RAB-SEL-9MM-16-NF-BLK
Rainier Arms Select 9mm Barrel, 16in, 1-10 Twist, 1/2x28, Black, Medium, RAB-SEL-9MM-16-NF-BLK
Rainier Arms Select 9mm Barrel, 16in, 1-10 Twist, 1/2x28, Black, Medium, RAB-SEL-9MM-16-NF-BLK
Rainier Arms Select 9mm Barrel, 16in, 1-10 Twist, 1/2x28, Black, Medium, RAB-SEL-9MM-16-NF-BLK
Rainier Arms Select 9mm Barrel, 4in, 1-10 Twist, 1/2x28, Black, Small, RAB-SEL-9MM-4-NF-BLK
Rainier Arms Select 9mm Barrel, 4in, 1-10 Twist, 1/2x28, Black, Small, RAB-SEL-9MM-4-NF-BLK
Rainier Arms Select 9mm Barrel, 4in, 1-10 Twist, 1/2x28, Black, Small, RAB-SEL-9MM-4-NF-BLK
Rainier Arms Select 9mm Barrel, 4in, 1-10 Twist, 1/2x28, Black, Small, RAB-SEL-9MM-4-NF-BLK
Rainier Arms Select 9mm Barrel, 6in, 1-10 Twist, 1/2x28, Black, Small, RAB-SEL-9MM-6-NF-BLK
1 of 21 images
Rainier Arms Select 9mm Barrel, 6in, 1-10 Twist, 1/2x28, Black, Small, RAB-SEL-9MM-6-NF-BLK
Rainier Arms Select 9mm Barrel, 10.7in, 1-10 Twist, 1/2x28, Black, Small, RAB-SEL-9MM-107-NF-BLK
2 of 21 images
Rainier Arms Select 9mm Barrel, 10.7in, 1-10 Twist, 1/2x28, Black, Small, RAB-SEL-9MM-107-NF-BLK
Rainier Arms Select 9mm Barrel, 16in, 1-10 Twist, 1/2x28, Black, Medium, RAB-SEL-9MM-16-NF-BLK
3 of 21 images
Rainier Arms Select 9mm Barrel, 16in, 1-10 Twist, 1/2x28, Black, Medium, RAB-SEL-9MM-16-NF-BLK
Rainier Arms Select 9mm Barrel, 4in, 1-10 Twist, 1/2x28, Black, Small, RAB-SEL-9MM-4-NF-BLK
4 of 21 images
Rainier Arms Select 9mm Barrel, 4in, 1-10 Twist, 1/2x28, Black, Small, RAB-SEL-9MM-4-NF-BLK
Rainier Arms Select 9mm Barrel, 6in, 1-10 Twist, 1/2x28, Black, Small, RAB-SEL-9MM-6-NF-BLK
5 of 21 images
Rainier Arms Select 9mm Barrel, 6in, 1-10 Twist, 1/2x28, Black, Small, RAB-SEL-9MM-6-NF-BLK
Rainier Arms Select 9mm Barrel, 6in, 1-10 Twist, 1/2x28, Black, Small, RAB-SEL-9MM-6-NF-BLK
6 of 21 images
Rainier Arms Select 9mm Barrel, 6in, 1-10 Twist, 1/2x28, Black, Small, RAB-SEL-9MM-6-NF-BLK
Rainier Arms Select 9mm Barrel, 6in, 1-10 Twist, 1/2x28, Black, Small, RAB-SEL-9MM-6-NF-BLK
7 of 21 images
Rainier Arms Select 9mm Barrel, 6in, 1-10 Twist, 1/2x28, Black, Small, RAB-SEL-9MM-6-NF-BLK
Rainier Arms Select 9mm Barrel, 6in, 1-10 Twist, 1/2x28, Black, Small, RAB-SEL-9MM-6-NF-BLK
8 of 21 images
Rainier Arms Select 9mm Barrel, 6in, 1-10 Twist, 1/2x28, Black, Small, RAB-SEL-9MM-6-NF-BLK
Rainier Arms Select 9mm Barrel, 10.7in, 1-10 Twist, 1/2x28, Black, Small, RAB-SEL-9MM-107-NF-BLK
9 of 21 images
Rainier Arms Select 9mm Barrel, 10.7in, 1-10 Twist, 1/2x28, Black, Small, RAB-SEL-9MM-107-NF-BLK
Rainier Arms Select 9mm Barrel, 10.7in, 1-10 Twist, 1/2x28, Black, Small, RAB-SEL-9MM-107-NF-BLK
10 of 21 images
Rainier Arms Select 9mm Barrel, 10.7in, 1-10 Twist, 1/2x28, Black, Small, RAB-SEL-9MM-107-NF-BLK
Rainier Arms Select 9mm Barrel, 10.7in, 1-10 Twist, 1/2x28, Black, Small, RAB-SEL-9MM-107-NF-BLK
11 of 21 images
Rainier Arms Select 9mm Barrel, 10.7in, 1-10 Twist, 1/2x28, Black, Small, RAB-SEL-9MM-107-NF-BLK
Rainier Arms Select 9mm Barrel, 10.7in, 1-10 Twist, 1/2x28, Black, Small, RAB-SEL-9MM-107-NF-BLK
12 of 21 images
Rainier Arms Select 9mm Barrel, 10.7in, 1-10 Twist, 1/2x28, Black, Small, RAB-SEL-9MM-107-NF-BLK
Rainier Arms Select 9mm Barrel, 16in, 1-10 Twist, 1/2x28, Black, Medium, RAB-SEL-9MM-16-NF-BLK
13 of 21 images
Rainier Arms Select 9mm Barrel, 16in, 1-10 Twist, 1/2x28, Black, Medium, RAB-SEL-9MM-16-NF-BLK
Rainier Arms Select 9mm Barrel, 16in, 1-10 Twist, 1/2x28, Black, Medium, RAB-SEL-9MM-16-NF-BLK
14 of 21 images
Rainier Arms Select 9mm Barrel, 16in, 1-10 Twist, 1/2x28, Black, Medium, RAB-SEL-9MM-16-NF-BLK
Rainier Arms Select 9mm Barrel, 16in, 1-10 Twist, 1/2x28, Black, Medium, RAB-SEL-9MM-16-NF-BLK
15 of 21 images
Rainier Arms Select 9mm Barrel, 16in, 1-10 Twist, 1/2x28, Black, Medium, RAB-SEL-9MM-16-NF-BLK
Rainier Arms Select 9mm Barrel, 16in, 1-10 Twist, 1/2x28, Black, Medium, RAB-SEL-9MM-16-NF-BLK
16 of 21 images
Rainier Arms Select 9mm Barrel, 16in, 1-10 Twist, 1/2x28, Black, Medium, RAB-SEL-9MM-16-NF-BLK
Rainier Arms Select 9mm Barrel, 16in, 1-10 Twist, 1/2x28, Black, Medium, RAB-SEL-9MM-16-NF-BLK
17 of 21 images
Rainier Arms Select 9mm Barrel, 16in, 1-10 Twist, 1/2x28, Black, Medium, RAB-SEL-9MM-16-NF-BLK
Rainier Arms Select 9mm Barrel, 4in, 1-10 Twist, 1/2x28, Black, Small, RAB-SEL-9MM-4-NF-BLK
18 of 21 images
Rainier Arms Select 9mm Barrel, 4in, 1-10 Twist, 1/2x28, Black, Small, RAB-SEL-9MM-4-NF-BLK
Rainier Arms Select 9mm Barrel, 4in, 1-10 Twist, 1/2x28, Black, Small, RAB-SEL-9MM-4-NF-BLK
19 of 21 images
Rainier Arms Select 9mm Barrel, 4in, 1-10 Twist, 1/2x28, Black, Small, RAB-SEL-9MM-4-NF-BLK
Rainier Arms Select 9mm Barrel, 4in, 1-10 Twist, 1/2x28, Black, Small, RAB-SEL-9MM-4-NF-BLK
20 of 21 images
Rainier Arms Select 9mm Barrel, 4in, 1-10 Twist, 1/2x28, Black, Small, RAB-SEL-9MM-4-NF-BLK
Rainier Arms Select 9mm Barrel, 4in, 1-10 Twist, 1/2x28, Black, Small, RAB-SEL-9MM-4-NF-BLK
21 of 21 images
Rainier Arms Select 9mm Barrel, 4in, 1-10 Twist, 1/2x28, Black, Small, RAB-SEL-9MM-4-NF-BLK

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Questions & Answers
Is it +p+ rated Expert Answer

These barrels can handle any commercial 9x19mm that is loaded within SAAMI specs. +P+ ammunition is usually loaded past SAAMI specs and we cannot guarantee safe operation. Additionally, these barrels are designed for blowback operation, higher pressure ammunition will result in excess bolt speed during extraction and could cause head separation and case failures.

by Ethan, Gear Expert, May 21, 2026
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Customer Reviews
Helpful Positive Review
Great barrel by Jay, Verified Owner, August 12, 2025
Awesome barrel! The only issue is Optics Planet’s shipping times. I understand it’s free shipping, but for what you pay, the shipping should be faster.
1/2 found this helpful
Most Recent Reviews
Rainier Arms 9mm barrel by Odie, Verified Owner, October 9, 2026
Good finish, not had a chance to test accuracy just yet. But I'm sure it's up to par. Only issue I found out the box, is there are no markings on the barrel of any sort. Other barrels I've used from Rainier Arms and other brands at least have their b...
Read More...
Read All 2 Reviews

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Product Info for Rainier Arms AR Select 9mm Barrel

Many have asked us to build a barrel with the same workmanship as our Match barrels while keeping it more affordable. They are able to reach our goal by sourcing a very high end barrel blank at an affordable price.image

Specifications for Rainier Arms AR Select 9mm Barrel:

Manufacturer: Rainier Arms
Color: Black
Fabric/Material: Stainless Steel
Caliber: 9mm Luger
Gas Block Journal Size-Diameter: .750 in
Barrel Twist Rate: 1-10
Flutes: No
Gun Make: AR Platform
Gun Model: AR-15
Firearms Threads Per Inch: 1/2x28

Package Contents:

  • Rainier Arms Select 9mm Barrel

What firearm models does the manufacturer say Rainier Arms AR Select 9mm Barrel is compatible with?

The manufacturer says that Rainier Arms AR Select 9mm Barrel is compatible with AR-15

Rainier Arms AR Select 9mm Barrel Orderable Models

List of Orderable Models

  • Rainier Arms Select 9mm Barrel, 16in, 1-10 Twist, 1/2x28, Black, Medium, RAB-SEL-9MM-16-NF-BLK , MPN: RAB-SEL-9MM-16-NF-BLK , UPC: 744985351039 , Code: 4ZM-ATB-CPO28-RAB-SEL-9MM-16-NF-BLK
  • Rainier Arms Select 9mm Barrel, 10.7in, 1-10 Twist, 1/2x28, Black, Small, RAB-SEL-9MM-107-NF-BLK , MPN: RAB-SEL-9MM-107-NF-BLK , UPC: 744985351022 , Code: 4ZM-ATB-CPO28-RAB-SEL-9MM-107-NF-BLK
  • Rainier Arms Select 9mm Barrel, 4in, 1-10 Twist, 1/2x28, Black, Small, RAB-SEL-9MM-4-NF-BLK , MPN: RAB-SEL-9MM-4-NF-BLK , UPC: 744985351008 , Code: 4ZM-ATB-CPO28-RAB-SEL-9MM-4-NF-BLK
  • Rainier Arms Select 9mm Barrel, 6in, 1-10 Twist, 1/2x28, Black, Small, RAB-SEL-9MM-6-NF-BLK , MPN: RAB-SEL-9MM-6-NF-BLK , UPC: 744985351015 , Code: 4ZM-ATB-CPO28-RAB-SEL-9MM-6-NF-BLK
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Last updated 2026-10-20 UTC.