Micro ARP .45 ACP – AR-45 Pistols & Uppers

Micro ARP .45 ACP – AR-45 Pistols & Uppers

hop Micro ARP .45 ACP configurations from Moriarti, including compact AR-45 pistols and .45 ACP upper assemblies. Built around the hard-hitting .45 Auto cartridge, these pistol-caliber AR configurations combine the familiar AR platform with compact barrel lengths and Glock-mag compatible options. Browse 45 ACP ARP pistols, Micro AR-45 uppers and complete firearms in multiple configurations and finishes. Check individual listings for barrel length, magazine compatibility, operating system and included components.

What is the difference between a Micro AR-45 and a standard AR-15?

A Micro AR-45 is a compact AR-style configuration chambered in .45 ACP rather than a traditional AR-15 rifle cartridge such as 5.56 NATO. AR-45 configurations use caliber-specific components for .45 ACP operation, and many are designed around Glock-compatible .45 ACP magazines. Exact compatibility varies by configuration, so the individual product specifications should always be checked.