Foxtrot Mike Products Complete FM45 Premium .45 Acp AR-15 Lower Receiver
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Foxtrot Mike Products
Overview
The Foxtrot Mike Products Complete FM45 Premium .45 ACP AR-15 Lower Receiver is a fully assembled lower designed specifically for the AR-9 platform, allowing you to build a robust rifle chambered in .45 ACP. This lower features a hardcoat anodized finish for enhanced durability and includes a trigger pin size of .154, ensuring compatibility with a wide range of aftermarket triggers. This lower is commonly found in builds that prioritize the .45 ACP caliber, making it a suitable choice for those looking to create a powerful yet versatile firearm.
Specifications
Foxtrot Mike Products Complete FM45 Premium .45 Acp AR-15 Lower Receiver
Available Merchants
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Build history on GunPartPicker
Builders have been adding the Foxtrot Mike Products Complete FM45 Premium .45 Acp AR-15 Lower Receiver to their builds on GunPartPicker since February 2026. All time, it ranks #300 of the 1,037 lower receivers builders have added. Builds with this lower receiver are nearly all chambered in .45 ACP and nearly all AR-9.
Updated · from real builds on GunPartPicker
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Frequently Built With
The part most often added in each category by the builds that include this one
PSA Classic SBA4 Lower Build KIT, Flat Dark Earth
FM Products MIKE-45 .45 ACP Complete Upper Receiver KIT 10 inch Barrel Front Charge Black
Rise Armament Spartan Bronze Micro Hand Stop for MLOK
Triggertech AR9 Single-Stage Adaptable Competitive PRO Curved Competition Trigger Pull 3lb Pull Black
Angstadt Arms .45 Acp AR-15 Bolt Carrier Group
Resilient Suppressors Ramblin Man .46 Cal Rifle Suppressor
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