New Products
Product Recommendations
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
-
![The Brand New Staccato 2011 HD C3.6 has arrived at Rainier Arms]()
The Brand New Staccato 2011 HD C3.6 has arrived at Rainier ArmsStaccato’s legendary performance meets a smaller footprint. The all-new Staccato 2011 HD C3.6 brings the precision, reliability, and feel of Staccato’s full-size HD line into the compact carry market. Built around a 3.6-inch barrel and a lightweight alumi...
Posted By: Thomas Phan
Posted On: October 09 2025
-
![New Product Launch: JMAC Customs x Rainier Arms]()
New Product Launch: JMAC Customs x Rainier Arms.223/5.56 Summit Brake Plan B Mount Summit Achieved: Introducing the Rainier Arms Summit Brake Mount. At Rainier Arms, we don’t just aim for the summit — we start there. Introducing the Summit Brake — the newest evolution for ...
Posted By: News Release
Posted On: October 02 2025
-
![Rainier Arms 20th Anniversary Sale — Huge Savings All Week Long!]()
Rainier Arms 20th Anniversary Sale — Huge Savings All Week Long!Rainier Arms is celebrating 20 years of innovation and community, and we’re kicking it off with an epic anniversary sale! From Monday 8/25 at 12:00 AM through Sunday 8/31 at 11:59 PM, enjoy massive discounts sitewide and unbeatable deals on your favorite cat...
Posted By: Thomas Phan
Posted On: August 25 2025
-
![Rainier Arms RUC Review: Performance and Reliability]()
Rainier Arms RUC Review: Performance and ReliabilityIn today’s dynamic firearms market, shooters are spoilt for choice when it comes to modern sporting rifles. However, few models manage to strike a balance between precision craftsmanship, tactical reliability, and everyday usability the way the Rainier A...
Posted By: rainierblog
Posted On: August 23 2025
