Micro ARP 5.56 Pistols & Uppers
5.56 NATO Micro ARP Pistols, Uppers & Kits
Micro ARP 5.56 builds deliver the familiar performance and versatility of the AR platform in a compact, maneuverable package. Designed for shooters who want a lightweight and customizable firearm, these short-barrel 5.56 configurations are ideal for range use, training, and modern sporting applications.
The 5.56 NATO cartridge remains one of the most popular AR-platform calibers thanks to its widespread availability, manageable recoil, and proven performance. Micro ARP 5.56 pistols and uppers provide AR enthusiasts with a compact solution while maintaining compatibility with many standard AR components and accessories.
Browse our selection of Micro ARP 5.56 pistols, uppers, barrels, and components designed for compact AR performance.
FAQ
What magazines do 5.56 Micro ARPs use?
Standard AR-15 / STANAG 5.56 magazines.
Why do some 5" barrels use a 1:5 twist?
The fast twist helps stabilize bullets from a very short barrel.
Do complete Micro ARP pistols ship to an FFL?
Yes. Complete pistols are firearms and ship to your local FFL dealer. Uppers and kits without a lower receiver ship directly where state law allows.
What does "SBR ready" mean?
The rear setup accepts a stock, but adding a shoulder stock to a pistol with a short barrel changes its federal classification. Do it only in compliance with NFA and state rules.
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