9mm AR Upper Receiver (Glock LRBHO) – Windham Weaponry


In stock

SKU: AR9RSET-WW-3 Category: Tag:



This AR9 slick side upper receiver, manufactured by Windham Weaponry, features a Last Round Bolt Hold Open (LRBHO) that functions with Glock magazines. This upper has a 9mm-sized ejection port, and sports no forward-assist or dust-cover. As such, no upper parts kit will be required for your build.


  • 7075 T6 Aircraft Grade Billet Aluminum.
  • Matte-Black Anodized Hard Coat.
  • Glock magazine compatible upper has last-round-bolt-hold-open functionality.
  • Cam-pin cut allows for compatibility with CMMG Radial Delay.
  • Engraved with the Windham Weaponry Logo and 9MM.

Weight: approx 8.5 ounces