The Stern Defense 015SD15INCHMOD4MLOK161 9mm Upper pairs a 16.10" black melonite barrel with a lightweight 15" MOD4 M-LOK free‑float handguard and a 7075‑T6 aluminum anodized receiver. This complete upper arrives assembled with dust cover, forward assist, Glock‑cut SD BU9 bolt, SD CH1 enhanced charging handle, and an SCB 9 compensator on the threaded muzzle, giving shooters a ready‑to‑run AR‑9 top end built around Stern Defense’s proven components.

Designed for the AR‑15 platform and optimized for 9mm, this upper is ideal for range use, training, and PCC competition where smooth cycling and controllable recoil matter. The deeper‑throated 9mm barrel helps reduce malfunctions with a variety of loads, while the long M‑LOK rail offers generous space for lights, grips, and other accessories. Backed by Stern Defense’s reputation for thoughtful engineering and solid craftsmanship, it’s a refined way to convert your compatible lower into a dedicated 9mm carbine.

Key Features:

• Manufacturer: Stern Defense
• Model: 015SD15INCHMOD4MLOK161
• Caliber: 9mm
• Action: 9mm blowback upper receiver
• Barrel Length: 16.10"
• Length: 28.20" overall upper length
• Threaded Barrel: Yes, with SCB 9 compensator
• Unique Features: 15" MOD4 M-LOK free‑float handguard, Glock‑cut SD BU9 bolt, SD CH1 enhanced charging handle