Description
For U.S. shooters building a custom AR-15, the lower receiver is the foundation of the entire platform. The Anderson Complete Lower with all lower parts installed and a 6-position CAR stock delivers a ready-to-assemble starting point that reduces build time without compromising on fit or function. Whether you are outfitting a new rifle for the range, a home defense setup, or a hunting carbine, this complete lower offers a reliable base that accepts nearly any standard AR-15 upper receiver.
What This Product Is and Who It’s For
This is a fully assembled AR-15 lower receiver from Anderson Manufacturing, a well-known U.S.-based producer of firearm components. The lower comes with all internal parts installed—including the trigger group, hammer, disconnector, selector, bolt catch, magazine catch, and grip—plus a 6-position CAR-style collapsible stock and buffer tube assembly. It is designed for shooters who want to complete a custom AR-15 build without sourcing and installing each individual lower part themselves. Target shooters, home defense owners, and hunting enthusiasts who prefer to pair a complete lower with a separate upper receiver will find this product straightforward to use. Collectors building multiple rifles also benefit from the consistency of a factory-assembled lower that meets standard mil-spec dimensions.
Key Specifications
- Caliber: Multi-caliber (compatible with .223 Remington, 5.56 NATO, .300 Blackout, and other AR-15 calibers when paired with the appropriate upper)
- Magazine Capacity: Accepts standard AR-15 magazines (typically 10, 20, or 30 rounds depending on state restrictions)
- Barrel Length: Not applicable (lower receiver only; barrel length determined by upper receiver)
- Finish: Hardcoat anodized black per mil-spec Type III Class 2
- Weight: Approximately 2.3 to 2.5 pounds (complete lower with stock and buffer assembly)
- Sights: Not included (sights mounted on upper receiver or handguard)
- Stock Type: 6-position collapsible CAR stock (commercial-spec buffer tube)
- Trigger: Mil-spec single-stage, approximately 5.5 to 7.5 pound pull weight
- Grip: Standard A2-style pistol grip
- Material: 7075-T6 aluminum receiver
- Buffer Tube: 6-position adjustable, carbine-length
Feature Deep-Dive
The Anderson complete lower is built around a forged 7075-T6 aluminum receiver, which is the same alloy used in military-specification AR-15 lower receivers. This material offers a good balance of strength and weight, resisting impact and wear over years of use. The hardcoat anodized finish provides corrosion resistance and a non-reflective surface that holds up well under regular handling and cleaning. Every lower is machined to mil-spec dimensions, meaning it will mate with virtually any standard AR-15 upper receiver from reputable manufacturers without requiring fitting or modification.
All lower parts are factory-installed using standard mil-spec components. The trigger group features a single-stage design with a consistent pull weight, suitable for general-purpose shooting and training. The hammer, disconnector, and selector are steel with a phosphate finish for durability. The bolt catch and magazine catch are steel as well, with positive engagement that reduces the chance of malfunction during reloads. Because these parts are installed at the factory, you eliminate the risk of misaligning springs or detents during assembly, which is a common frustration for first-time builders.
The included 6-position CAR stock is a collapsible design that allows the shooter to adjust length of pull for different body sizes, clothing layers, or shooting positions. The stock slides on a commercial-spec buffer tube and locks into one of six positions with a positive click. The buttpad is rubberized for a non-slip shoulder contact, and the stock body is made from reinforced polymer that resists cracking under recoil. This stock style is lightweight and works well for both close-quarters handling and prone shooting.
The buffer tube assembly includes a carbine-length buffer and spring, which are standard for AR-15s with barrels 16 inches or shorter. This setup provides reliable cycling with most .223 and 5.56 ammunition when paired with a carbine-length gas system upper. The buffer tube is anodized aluminum and includes the end plate and castle nut, which are staked at the factory to prevent loosening during use. The entire assembly is ready to attach to the lower receiver.
Anderson Manufacturing has produced AR-15 components for over a decade and is known for consistent quality control. Each lower is serialized and manufactured in the United States. The complete lower is function-tested at the factory to ensure the safety selector, trigger, and bolt catch operate correctly. This testing reduces the likelihood of receiving a unit with out-of-spec parts, which can occur with budget-priced stripped lowers that require separate parts kits.
The grip included is the standard A2-style pistol grip with a finger rest and storage compartment for a cleaning kit or spare batteries. While some shooters may choose to replace it with an aftermarket grip, the A2 design provides a neutral angle that works well for most hand sizes. The grip screw is included and installed, so no additional hardware is needed to attach the grip to the lower.
Ideal Use Cases
This complete lower is suited for a range of applications. For home defense, pairing it with a 16-inch barreled upper chambered in 5.56 NATO or .300 Blackout gives you a reliable carbine that is easy to maneuver indoors. The adjustable stock allows you to shorten the overall length for tight spaces. For target shooting and range practice, the mil-spec trigger provides a predictable break that helps develop consistent marksmanship. Hunters who use AR-15s for varmint or predator control can pair this lower with a lightweight upper in .223 Remington or 6.5 Grendel. Because the lower is multi-caliber compatible, you can swap uppers to change calibers without purchasing a second firearm. Collectors and builders who want to assemble multiple rifles can use this complete lower as a standard base, ensuring each build starts with the same lower dimensions and parts quality.
Compatibility Notes
This lower receiver accepts all standard AR-15 magazines, including those from Magpul, Lancer, Brownells, and military surplus. It is compatible with any mil-spec AR-15 upper receiver, including those from Aero Precision, BCM, PSA, and Anderson. The buffer tube is commercial-spec, so aftermarket stocks designed for commercial tubes will fit. If you plan to use a rifle-length gas system or a heavy buffer, verify compatibility with your specific upper setup. The lower does not include a trigger guard, but the lower receiver has an integral trigger guard that is machined as part of the forging. Holsters are not applicable for a lower receiver alone, but once assembled into a complete rifle, standard AR-15 slings and cases work. Ammunition compatibility is determined by the upper receiver and barrel; this lower functions with any .223 or 5.56 ammunition as well as .300 Blackout when using the correct upper.
FAQ Section
1. Can this product be shipped to my home in the United States?
Yes, we ship this complete lower to your chosen FFL dealer within the United States. Since it is a firearm receiver, it must be transferred through a licensed federal firearms licensee (FFL). We do not ship directly to residential addresses. You will need to provide the FFL’s contact information during checkout, and we will verify their license before shipping.
2. How does the FFL transfer process work for this lower receiver?
After you place your order, we will contact your selected FFL to confirm they are willing to accept the transfer. Once confirmed, we ship the lower to them via a carrier that complies with all federal regulations. You then visit the FFL dealer, complete a Form 4473, and pass a NICS background check. The dealer may charge a transfer fee, which is separate from our purchase price. We recommend contacting your FFL ahead of time to confirm their fees and policies.
3. What ammunition is compatible with this complete lower?
The lower receiver itself does not determine ammunition compatibility. Once you attach an upper receiver, the caliber is dictated by the barrel and bolt carrier group. This lower works with any AR-15 caliber that uses standard AR-15 magazines and bolt catch geometry, including .223 Remington, 5.56 NATO, .300 Blackout, 6.5 Grendel, and 350 Legend. Always verify that your upper and magazine are designed for the specific caliber you intend to use.
4. Does this product come with a warranty?
Anderson Manufacturing provides a limited lifetime warranty against defects in materials and workmanship for the original purchaser. This warranty covers the receiver and installed parts under normal use. It does not cover damage from misuse, modifications, or improper assembly. If you encounter a defect, contact Anderson directly with proof of purchase for warranty service. We also stand behind our products and will assist with any issues that arise from shipping or manufacturing defects.
5. What is your return policy for this complete lower?
Because this is a firearm receiver, all sales are final once the item is transferred to you through an FFL. We do not accept returns on lower receivers after transfer due to federal regulations. If the product arrives damaged or with a manufacturing defect, contact us within 48 hours of delivery. We will work with Anderson Manufacturing to arrange a replacement or repair. If you change your mind before the item is shipped, we can cancel the order for a full refund. After shipment, but before transfer, we may accept a return subject to a restocking fee and return shipping costs.
Closing Call to Action
This Anderson Complete Lower with all lower parts and a 6-position CAR stock is available now for shipment to your local FFL dealer anywhere in the United States. Add it to your cart to begin building an AR-15 that meets your specific needs, whether for the range, home, or field. We ship from our U.S. location and process orders promptly to get your build started without unnecessary delays.
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