The Battle Arms XIPHOS 9mm PCC billet upper receiver is a lightweight blowback pistol-caliber upper in black anodized 7075-T6 aluminum (brand part no. 100-034-607). Battle Arms Development designed it as a dedicated PCC upper that pairs with its own XIPHOS lower, and the maker says it will work with any mil-spec style 9mm lower receiver. It is machined from a solid billet block with lightweight cuts that remove material where it is not needed and still keep the structural strength. The finished receiver weighs 6.10 oz. It suits a 9mm AR9 build that starts from a light, rugged billet upper.

Key Specifications

• The receiver is built for 9mm blowback PCC use, as a dedicated pistol-caliber upper in the AR9 pattern.
• It is machined from billet 7075-T6 aluminum, aircraft-grade material with a high strength-to-weight ratio.
• The finish is Type III hard coat black anodizing, a durable surface for a receiver that is handled constantly.
• The finished receiver weighs 6.10 oz, which keeps a 9mm PCC build light.
• Lightweight cuts in the patent-pending design remove material where it is not needed while keeping the receiver’s structural integrity.
• It works with any mil-spec style 9mm lower receiver, according to the maker, so the XIPHOS lower is not required.
• It is matched to the XIPHOS lower receiver, the Battle Arms Development lower it was designed to pair with.
• Every receiver gets a dimensional accuracy inspection, a quality step that helps the parts line up with the lower.
• All sharp edges are de-burred by hand, which makes the receiver comfortable to handle during assembly.

Frequently Asked Questions

Does it need the XIPHOS lower? No. It is matched perfectly with the XIPHOS lower, but Battle Arms Development says it will work with any mil-spec style 9mm lower receiver.

Is it a complete upper? No. The listing is the black anodized billet upper receiver itself, so the barrel, bolt carrier group and charging handle are separate.

What is it made from? It is machined from a solid block of 7075-T6 aircraft-grade billet aluminum and finished in black Type III hard coat anodizing.

Buy the Battle Arms Development XIPHOS 9mm PCC Billet Upper Receiver, Black Anodized

A dedicated 9mm upper is the foundation of a PCC build, and this one starts from billet. Order it from our Lubbock, Texas gun shop for fast shipping, and browse more AR-15 uppers while you are here.