New Frontier 9/45 upper receiver raw – Free Shipping!


Out of stock

SKU: N_ar9-45_raw_uprcvr Category:


***Shipping Note*** These ‘may’ take up to 4 or 5 days to ship if none are in the Rocky Canyon Armory stock. If an order is received and they aren’t in stock here, it will be immediately ordered and will arrive to ship within 3 or 4 days.

Pistol Caliber Billet AR-9/45 “Slick Side” Upper with LRBHO (Last Round Bolt Hold Open)

 Manufacturer: New Frontier Armory

Model: Pistol Caliber Billet AR-9/45 “Slick Side” Upper with LRBHO — PATENT PENDING

Caliber: Multi (will accept any barrels, bolts and caliber designed for the AR-9/45 style platform)

 Other Specifications and Features of the Billet AR-9/45 “Slick Side” Upper with LRBHO:

  • Machined from 7075 T6 aircraft grade billet aluminum
  • Compatible with all standard AR-15 / AR-9 components and most aftermarket parts
  • Designed to match lines with New Frontier Armory C-9  & C-45 Billet Lower
  • Contains integrated Last Round Bolt Hold Open (LRBHO) technology (PATENT PENDING) that reliably holds the bolt open when magazine is empty
  • LRBHO feature is designed for lowers that accept Glock style magazines
  • **NOTE — This upper is not machined for a gas tube as it is intended for blowback gas systems only


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