The MORIARTI AR-9 10.5" Premium Upper Half is your go-to solution for building or upgrading a compact and reliable AR-9 in 9mm. This upper is engineered for performance and simplicity, delivering a slick side design, integrated faux suppressor shroud, and high-quality components to match. Perfect for pistol-caliber builds, this upper is compatible with most 9mm AR-style lower receivers.
Includes ramped 9mm BCG and charging handle – making this a drop-in ready solution.
Barrel: 10.5" HBAR, 4150 CMV steel, hardened to 26–32 RC, stress relieved
Chamber: 9MM, 1:10 twist, 1/2x36 TPI
Muzzle Device: Includes faux suppressor-style thread-on shroud
Gas System: Blowback
Upper Receiver: A3 slick side, forged 7075-T6 aluminum, hardcoat anodized, no dust cover or forward assist
Handguard: 10" free-floating slim profile M-LOK, aircraft-grade aluminum, hardcoat anodized
Bolt Carrier Group: Ramped 9MM BCG included
Charging Handle: Included
Weight: Approx. 3 lb 8 oz
Compatibility: Fits most 9MM Glock-style AR lower receivers
Made in the USA
This upper is non-LRBHO (no Last Round Bolt Hold Open)
Customize your build with optional upgrades at the top of the page
Images may vary slightly from actual product
Tags: ar-9, 9mm, 10.5 10.5 10.5", premium, upper, slim, m-lok, handguard, , bcg, charging, handle, , faux, can, –, non-lrbho, moriarti, arms