Complete AR-15 Rifle Lower Receiver

This Complete AR-15 Rifle Lower Receiver is the foundational component for your next build or upgrade. As the serialized part that houses the fire control group, it’s the essential starting point for any AR-15 rifle assembly. Miami Shooters Supply provides this ready-to-install unit, saving you the time and hassle of sourcing individual small parts. You get a fully functional lower receiver that’s ready to mate with your preferred upper receiver, shipped quickly so you can get to work.

Key Features

• Fully assembled with mil-spec trigger, hammer, disconnector, and safety selector.
• Includes a standard carbine buffer tube, buffer, and spring for immediate compatibility with collapsible stocks.
• Features a 6-position mil-spec receiver extension for adjustable length of pull.
• Machined from 7075-T6 aluminum for a durable, lightweight foundation.
• Equipped with a standard magazine catch and bolt catch for reliable function.
• Finished with a hard-coat anodized surface for superior corrosion resistance.

Built For

This complete lower is ideal for the builder who wants a no-fuss start to a custom rifle. It’s perfect for first-time assemblers seeking a plug-and-play solution, as well as experienced shooters who appreciate the convenience and consistency of a professionally assembled lower receiver. It’s the smart choice for a reliable build without the guesswork.

Specifications

• Caliber Compatibility: Multi-caliber, designed for .223/5.56 NATO and other AR-15 compatible cartridges.
• Material: Forged 7075-T6 Aluminum with Type III Hard Coat Anodized Finish.
• Fire Control: Standard Mil-Spec components.
• Buffer System: Carbine-length buffer tube with standard buffer and spring.
• Compatibility: Designed to pair with any mil-spec AR-15 upper receiver.

FAQ

Is this lower receiver shipped to my door?
No. This complete AR-15 lower receiver is a firearm component and must be shipped to a licensed FFL dealer of your choice for a background check and transfer, in accordance with all federal, state, and local laws.

What else do I need to complete a functioning rifle?
You will need to pair this complete lower receiver with a complete AR-15 upper receiver assembly, which includes the barrel, bolt carrier group, and handguard. You will also need a stock, pistol grip (if not included), and magazines.