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Rainier Arms 9MM Billet Receiver Set - Black

AR-9 Receiver Set

Out of stock

FFL Required Before Shipping.
Please have your dealer email a copy of their FFL to [email protected] or fax it to 253-218-2998, referencing your name and order number.


Our billet uppers are CNC machined from solid billet 7075-T6 aluminum which is 70% stronger than the commonly used 6061 aluminum and finished with milspec hardcoat anodize to a surface hardness of 60 Rockwell. The precision machining on our our billets are well known in the industry and we are excited to introduce our uppers for your next rifle build. Our receiver set feeds GLOCK® 9mm magazines.


  • A4 Feed Ramps
  • 7075 Billet Aluminum
  • Upper and Lower are proprietary 
  • Mil Spec Hardcoat Anodize
  • Threaded bolt catch screw
  • Threaded retainier screw for take down pin
  • Ambidextrous Bolt Release
  • Flared magwell
  • Compatible with short throw saftey selector
  • Tensioning screw for proper upper and lower fit
  • Zinc-plated extractor and last round hold open lever
  • Last round bolt hold open on an empty magazine
  • Lower receiver accepts 9mm, .40 S&W and .357 SIG GLOCK® magazines
  • Slick side upper receiver with appropriately sized ejection port and no forward assist or dust cover
  • Accepts aftermarket Glock® 9mm double stack magazines. We recommend using factory Glock® magazines
  • Weight - Upper receiver 7.7oz Lower receiver 12.4 oz

Please NOTE: Our lower receiver will not fit with most upper receiver

More Information
Product Type AR-9 Receiver Set
Manufacturer Rainier Arms, LLC
Color Black
Caliber 9mm

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