Product Description
The LUXUS ARMS (HM DEFENSE) MonoBloc Upper is a complete AR-15 pistol upper engineered for shooters who want a compact, high-performance setup in .223 Remington and 5.56x45mm NATO. Built around a 12.50-inch 4150 chrome moly match grade barrel, this upper features a Black Cerakote finish, a 1:8 twist rate, and a carbine-length gas system with an integral machined patented gas block. The barrel is tripled honed and button rifled for enhanced consistency and performance.
This MonoBloc Upper pairs strength and precision with premium materials throughout. The receiver is made from 7075-T6 aluminum with a black anodized finish, while the 10.37-inch free-float handguard is machined from 6061-T6 aluminum and combines a full-length Picatinny top rail with Magpul M-LOK attachment slots for flexible accessory mounting. It also includes a patented HMB bolt, Mil-Spec components, charging handle, and a dust cover with an American Flag detail, making it a feature-rich complete upper for AR-15 pistol builds.
Product Highlights
- Complete AR-15 pistol upper chambered for .223 Remington and 5.56x45mm NATO
- 12.50-inch 4150 chrome moly match grade barrel with Black Cerakote finish and 1:8 twist
- Integral machined patented gas block with carbine gas system for a streamlined design
- 10.37-inch free-float handguard with Picatinny rail and Magpul M-LOK compatibility
- Includes patented HMB bolt, charging handle, Mil-Spec components, and American Flag dust cover
Specs
- Brand: LUXUS ARMS (HM DEFENSE)
- Manufacturer Part Number: 125MBUP556
- UPC: 854164007203
- Product Type: Complete upper
- Platform: AR-15 pistol
- Caliber: .223 Remington, 5.56x45mm NATO
- Sights: Optic ready
- Barrel Length: 12.50 in
- Barrel Material: 4150 Chromoly
- Barrel Description: Match grade, tripled honed, button rifled
- Barrel Finish: Black Cerakote
- Twist Rate: 1:8
- Gas System: Carbine
- Gas Block: Integral machined patented gas block
- Receiver Material: 7075-T6 aluminum
- Receiver Finish: Black anodized
- Handguard Length: 10.37 in
- Handguard Type: Free-float
- Handguard Material: 6061-T6 aluminum
- Handguard Features: Picatinny rail, Magpul M-LOK
- Handguard Finish: Black hard coat anodized
- Included Components: Patented HMB bolt, charging handle, Mil-Spec components, dust cover with American Flag
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