Foxtrot Mike ProductsAll Foxtrot Mike Products upper receivers

FM Products Mike-9 9mm Luger 5INCH Upper Receiver 1-10 Twist 1/2x36 Threads Type III Hardcoat Anodized Black

Foxtrot Mike Products FM Products Mike-9 9mm Luger 5inch Upper Receiver 1-10 Twist 1/2x36 Threads Type III Hardcoat Anodized Black - Upper Receiver for AR-15 - view 1

Foxtrot Mike Products

Overview

The FM Products Mike-9 9mm Luger Upper Receiver is a complete assembly designed specifically for AR-9 platforms, featuring a compact 5-inch barrel length that enhances maneuverability while maintaining performance. The 1:10 twist rate ensures stability for a variety of 9mm projectiles, while the 1/2x36 thread pitch offers compatibility with standard muzzle devices. This upper receiver is frequently found in builds focused on 9mm caliber setups, making it a solid choice for those looking to customize their AR-9 configuration.

Specifications

MPNMIKE9UR54B
Twist Rate1:10
Thread Pitch1/2x36
Caliber9mm
PlatformAR-9
AssemblyComplete
ColorBlack
Barrel Length5

Available Merchants

Price Alert

Log in to set a price alert on this product.

No Available merchants at this time.

Build history on GunPartPicker

Builders on GunPartPicker first added the Foxtrot Mike Products FM Products Mike-9 9mm Luger 5INCH Upper Receiver 1-10 Twist 1/2x36 Threads Type III Hardcoat Anodized Black to a build in February 2026.

Trending upper receivers →

Updated · from real builds on GunPartPicker

Not sure which upper receiver to pick?

We ranked every upper receiver by how often it shows up in real builds on GunPartPicker.

Read the guide: Most Popular AR-15 Upper Receivers →

Check it against the live catalog:

Frequently Built With

The part most often added in each category by the 3 builds that include this one

Daniel Defense Grip-N-Rip Ambidextrous Charging Handle, Type III Hardcoat Anodized Black for 7.62 AR-10 Rifle - 04129006

Daniel Defense Grip-N-Rip Ambidextrous Charging Handle, Type III Hardcoat Anodized Black for 7.62 AR-10 Rifle - 04129006

Charging Handle$111in 1 build
Harrington & Richardson 635 9mm Complete Lower, Black

Harrington & Richardson 635 9mm Complete Lower, Black

Lower Receiver$330in 1 build
Stern Defense Nickel Boron 9mm Complete Bolt Carrier Group - SD BU9 NIB ECHO

Stern Defense Nickel Boron 9mm Complete Bolt Carrier Group - SD BU9 NIB ECHO

Bolt Carrier Group$170in 1 build
Magpul MOE K2 Grip Polymer Gray

Magpul MOE K2 Grip Polymer Gray

Pistol Grip$15in 1 build
Arisaka Defense M-LOK Indexer

Arisaka Defense M-LOK Indexer

Foregrip$30in 1 build
Timney Triggers Targa Two Stage AR-15 Trigger Long 1ST Stage Straight Bow

Timney Triggers Targa Two Stage AR-15 Trigger Long 1ST Stage Straight Bow

Trigger$182in 1 build

Builds Featuring This Part

See all 2 →

Builds in the community that include the FM Products Mike-9 9mm Luger 5inch Upper Receiver 1-10 Twist 1/2x36 Threads Type III Hardcoat Anodized Black

BuildPartsTotal
AR9 FM9 Lower Build by DesignerReps_terra24 (reddit) build
AR9 FM9 Lower Build by DesignerReps_terra24 (reddit)		11$2353.21
7" build
7"		11$2353.21

Review this product

Share your thoughts with other customers

Be the first to review

No reviews yet. Be the first to review this product!