The Stern Defense 015SD8INCHMOD5MLOK6INC 45ACP 6" Black Melonite Barrel Aluminum Anodized Receiver is a complete AR-15 upper assembly built around a dedicated .45 ACP system. It combines a 6-inch Black Melonite barrel, free-float 8-inch M-LOK handguard, and mil-spec flat-top upper receiver with enlarged ejection port for reliable cycling of larger pistol cartridges. The included Glock-cut bolt carrier group and enhanced charging handle are engineered to work seamlessly with Colt SMG and Glock magazines while maintaining familiar AR-15 ergonomics.

This upper is well suited for building a compact .45 ACP AR platform for range use, training, or recreational shooting where shooters want the feel of an AR with the punch of a pistol cartridge. The lightweight aircraft-grade aluminum handguard and blast can help manage gas and heat away from the shooter, while the 1:16" twist chrome moly steel barrel is optimized for common .45 ACP loads. Stern Defense’s attention to detail in machining, coatings, and component integration reflects the brand’s reputation for thoughtful design and dependable craftsmanship.

Key Features:

• Manufacturer: Stern Defense
• Model: 015SD8INCHMOD5MLOK6INC
• Caliber: 45 ACP
• Action: 45 ACP
• Barrel Length: 6"
• Barrel Material: Chrome Moly Steel
• Barrel Finish: Black Melonite
• Twist Rate: 1:16"
• Gun Rail: M-LOK Free-Float Handguard
• Bolt Carrier Group Included: Yes
• Compatible Firearm Make: AR-15 Platform
• Muzzle Device: HBC45 Blast Can
• Weight: 15.5 oz (upper assembly)