Complete AR-15 Pistol Lower Receiver

This Complete AR-15 Pistol Lower Receiver is the essential foundation for building a compact, versatile firearm. If you’re assembling a legally configured AR pistol or SBR, this ready-to-install lower saves you significant time and hassle. Miami Shooters Supply delivers this complete unit with all internal fire control parts installed, so you can simply mate it with your preferred pistol upper receiver and be ready to function-check. The primary benefit is immediate reliability without the guesswork of a parts kit.

Key Features

• Mil-spec forged 7075-T6 aluminum receiver for proven durability.
• Fully assembled with a pistol buffer tube kit, including a proper carbine spring and buffer.
• Features a standard Single Stage Mil-Spec trigger group for consistent performance.
• Includes an SB Tactical SBA3 or comparable pistol stabilizing brace for enhanced control (subject to inventory and current regulations).
• All small parts, including the bolt catch, magazine release, and selector, are installed and torqued to spec.
• Finished in a hardcoat anodized black for corrosion resistance.

Built For

This lower is built for the shooter who values a correct, no-fuss start to their pistol build. It’s ideal for constructing a compact home defense firearm or a highly maneuverable truck gun, providing a reliable core you can trust. This AR-15 part is for builders who understand that a quality lower is the critical first step in any serious build.

Specifications

• Caliber Compatibility: Multi-caliber (designed for .223/5.56, .300 Blackout, and other cartridges using a standard AR-15 magazine).
• Receiver Material: Forged 7075-T6 Aluminum with Type III Hardcoat Anodizing.
• Fire Control: Single Stage Mil-Spec Trigger.
• Buffer System: Carbine-length pistol tube with appropriate spring and buffer weight.
• Overall Compatibility: Designed to pair with any mil-spec AR-15 pistol upper receiver assembly.

FAQ

Is this Complete AR-15 Pistol Lower Receiver shipped directly to my door?
No. As a firearm receiver, it must be shipped to a licensed FFL dealer of your choice, where you will complete the necessary background check and paperwork before taking possession.

What upper receiver will work with this lower?
It is compatible with any standard mil-spec AR-15 upper receiver assembly configured as a pistol (with a barrel under 16″ and no rifle stock installed). Always ensure your final configuration complies with all federal, state, and local laws.