Rainier Arms - Pursue Your Passion

The ultimate stop for AR-15 Rifles and AR-15 parts

We are one of the largest online sources for quality AR-10 and AR-15 rifles, parts and accessories. Shop our selection of complete and stripped Uppers and Lowers, find Barrels and Ammo for your firearms, gear yourself up with quality Gear and Apparel. We have it all!

Rainier Arms was started by enthusiasts for enthusiasts. We specialize in high-end AR-15/M16 rifles, parts and accessories. If we won't use it, we won't sell it.

We offer a wide variety of firearms and firearm parts from all your favorite manufacturers. Satisfy your needs from brands such as Glock, SIG, S&W, Primary Arms, Stag Arms, PWS, Rainier Arms and many others. Browse all manufacturers.

“ Great store for high-end firearms. Very very knowledgeable staff. „

“ Rainier Arms is my go to dealer for high-end AR15 parts and accessories online. They always have a great selection of parts in stock. Many you can't find anywhere else. „

“ Great shop with easy order pick up for locals making online purchases. „

Latest Blog Posts

Why Pistol Caliber Carbines Are the Perfect Firearm for Versatility and Performance
When it comes to firearms, few categories offer the versatility and practicality of Pistol Caliber Carbines (PCCs). Whether you're a competitive shooter, home defender, or range enthusiast, PCCs provide an unbeatable combination of accuracy, ease of us...

Posted By: Thomas Phan

Posted On: February 10 2025
How Tuebor Coin is Transforming the 2A Industry
The Second Amendment (2A) industry stands at the intersection of tradition and innovation, where cutting-edge technologies are reshaping how businesses and enthusiasts operate. Among these innovations, Tuebor Coin has emerged as a transformative force,...

Posted By: News Release

Posted On: February 03 2025
Skills Over Stuff: Why Training Matters More Than Gear or Accessories
By: Don Smith Director of Training/Chief Instructor Rainier Arms Firearms Academy Firearms ownership often comes with excitement about the newest gadgets, accessories, or even adding another gun to the safe. While new gear can be fun and sometimes use...

Posted By: Don Smith

Posted On: January 27 2025
Hot Products for 2025
As SHOT Show 2025 approaches, the anticipation for groundbreaking firearms and accessories is at an all-time high. At Rainier Arms, we’re excited to spotlight the hottest products for 2025 that are set to dominate the industry. From cutting-edge lase...

Posted By: Thomas Phan

Posted On: January 10 2025