The Stern Defense Mod5 upper (MPN 015SD15INCHMOD5MLOK161) is a complete AR-15 upper assembly chambered in .45 ACP with a 16.1-inch barrel.

Key Specifications

• Stern Defense complete .45 ACP upper assembly
• Chambered in .45 ACP
• 16.1-inch barrel, Black Melonite finish
• 1:16 inch rifling twist rate
• Includes 15-inch M-LOK rail with barrel nut and bolts
• SD CB45 compensator/muzzle brake included
• Assembled upper receiver with dust cover and forward assist
• Includes SD BU45 Glock-cut bolt
• Includes SD CH1 enhanced charging handle

Frequently Asked Questions

Does this include a lower receiver?
No, this is a complete upper assembly only; it ships without a lower receiver or fire control group.

What caliber is this upper chambered in?
It is chambered in .45 ACP.

Buy the Stern Defense 45 ACP 16.1in Complete Upper

Build a dedicated .45 ACP AR upper with this complete assembly from Stern Defense. Ships fast from a Lubbock, TX gun shop in our AR-15 uppers lineup.