STERN DEFENSE 015SD15INCHMOD5MLOK161 Upper .45 ACP 16.10″

This Stern Defense assembled upper pairs a 15-inch M-LOK rail with a 16.10" .45 ACP barrel finished in Black Melonite. It ships equipped with an SD BU45 Glock-cut bolt, SD CH1 enhanced charging handle, dust cover, forward assist, and the SD CB45 compensator break. The assembly is suited for .45 ACP AR-platform configurations and range or heavy-caliber use.

Key Specifications

• Caliber is .45 ACP.
• The barrel measures 16.10".
• The barrel is made from 4150 Chrome Moly Steel.
• The barrel finish is Black Melonite.
• The rate of twist is 1:16".
• This upper includes a 15-inch M-LOK rail with necessary mounting hardware.
• The receiver is described as 7075-T6 Aluminum, Anodized.
• The finished receiver surface is Anodized.
• The bolt is an SD BU45 Glock-cut bolt.
• The package includes an SD CH1 enhanced charging handle and an SD CB45 compensator break.

Built from service-grade components and finished for durability, this Stern Defense upper offers a complete parts set for assembling a .45 ACP AR-style upper. Its 15-inch M-LOK rail and Black Melonite barrel provide a durable, functional platform for range use and heavy-caliber applications, while the included bolt, charging handle, and compensator support straightforward installation and reliable operation.