Details
Blemished IX 8.3-Inch 1:10 9mm AR-9 Free-Float M-LOK Handguard Pistol Complete Upper Build
The Blemished IX Complete Upper is built around an 8.3-inch 9mm AR-15/AR-9 barrel machined from high-performance steel in a medium profile with a Nitride finish. It is paired with a billet upper receiver built for pistol calibers and a 7-inch black M-LOK handguard, and it ships with a 9mm Nitride bolt carrier group and a mil-spec quality charging handle, so the builder receives the core working components of an AR-9 upper in one package. This listing is sold in blemished condition, so cosmetic imperfections may be present. The compact barrel keeps the front end light and quick to handle, and the 1:10 twist suits a wide range of 9mm bullet weights.
Key Features
- 8.3-inch medium profile barrel, high-performance steel, Nitride finish, 1:10 twist, 9mm
- 1/2x36 muzzle threads
- Billet upper receiver for pistol calibers, 6061-T6 aluminum, Type III hardcoat anodized
- 7-inch M-LOK handguard, 6061-T6 aluminum, black
- 9mm A2 birdcage flash hider on 1/2x36 threads
- 9mm Nitride bolt carrier group, 8620 alloy steel carrier
- Mil-spec quality charging handle included
- Sold in blemished condition; cosmetic imperfections may be present
Barrel and Muzzle
The 8.3-inch barrel is machined from high-performance steel in a medium profile and finished in Nitride, a surface treatment that adds hardness and corrosion resistance while leaving a clean, matte black look. Its 1:10 twist rate is suited to a wide range of 9mm bullet weights. The muzzle is threaded 1/2x36, the common thread pitch for 9mm devices, and carries the included 9mm A2 birdcage flash hider.
Upper Receiver and Handguard
The upper receiver is a billet unit built for pistol calibers, machined from 6061-T6 aluminum and finished in Type III hardcoat anodizing, a hard, wear-resistant surface that resists scratches and corrosion. It is paired with a 7-inch black M-LOK handguard machined from 6061-T6 aluminum. The M-LOK slots give the builder room to mount lights, grips, handstops, and other accessories wherever the setup calls for them.
Bolt Carrier Group and Charging Handle
The included 9mm bolt carrier group has a carrier machined from 8620 alloy steel with a Nitride finish, which adds hardness and corrosion resistance and helps the carrier stand up to repeated cycling. It is paired with a mil-spec quality charging handle, completing the upper so it is ready to be matched with a compatible lower receiver.
Compatibility
This upper is built for AR-9 platforms chambered in 9mm. Free-float or drop-in handguard style, ejection port door and forward assist configuration, extractor style, and the lower receiver magazine well pattern needed to match the bolt carrier group's magazine compatibility were not supplied with this listing and should be confirmed before purchase.
Follow all manufacturer instructions and safe handling practices.
Ensure compliance with all applicable federal, state, and local laws.
