This Guntec USA upper receiver (brand part number GT-UPPER-9) is a stripped billet upper machined for 9mm Luger AR9 builds, cut from a solid block of 6061 T6 billet aluminum with a smooth slab-side profile and a flat-top 1913 Picatinny rail for mounting optics. Guntec builds it to standard AR-15 receiver dimensions, so it matches up with any brand of lower receiver rather than requiring a proprietary pairing. It ships stripped, meaning no internals are included, and is finished in black anodizing.

Key Specifications

• Chambered for 9mm Luger.
• Machined from a solid billet block of 6061 T6 aluminum.
• Features a smooth slab-side design.
• Uses a flat-top 1913 Picatinny rail.
• Matches up with any brand of AR-15 lower receiver.
• Finished in black anodizing.
• Ships stripped, with no internals included.
• Made in the USA.

Frequently Asked Questions

Will this fit any AR-15 lower? Yes, it’s machined to standard AR-15 receiver dimensions and matches up with any brand of lower.

Does this upper come with internals? No, it ships stripped; bolt carrier group and charging handle are sold separately.

What optics rail does it use? A flat-top 1913 Picatinny rail.

Buy the Guntec USA AR9 Stripped Billet Upper Receiver, Black

A billet upper machined to standard dimensions keeps a 9mm build compatible with whatever lower is already on hand, and that’s exactly how Guntec USA built this one. Browse the rest of our AR-15 uppers selection and order from our Lubbock, Texas gun shop for fast, insured shipping.