Anderson Manufacturing115661161
Premium Anderson G2K421A000OP AR-15 Lower Parts Kit - Black, Complete Upgrade Set$51.48
Availability: In Stock
Current Stock: Out of stock
The Anderson Manufacturing AR-15 complete lower receiver is a ready-to-assemble platform that puts you one upper away from a finished rifle. Built from aluminum with precision manufacturing, this M4-pattern lower arrives with the lower parts kit and buffer tube assembly already installed—so you skip the tedious assembly phase and get straight to the range or field. It's the same lower Anderson uses in their own AM-15 rifles, which tells you something about the confidence they have in the design and build quality.
If you're building your first AR-15 or your tenth, a complete lower receiver handles the regulatory and mechanical heavy lifting. The semi-auto action is chambered for 5.56 NATO or .223 Remington, giving you flexibility in ammunition choice. The anodized finish protects the aluminum against corrosion, and the included 6-position buffer tube kit lets you dial in the stock length to your preference. A standard M4 grip and open trigger round out the package—familiar controls that need no introduction to anyone who's shot an AR platform.
This lower is spec-compliant and ready to accept any standard AR-15 upper receiver assembly. Whether you're planning a lightweight varmint rig, a hunting rifle, or a tactical build, starting with a proven Anderson lower gives you a solid foundation that won't nickel-and-dime you with fitment surprises. Note that an FFL is required to take possession of this lower receiver.
| Manufacturer | Anderson Manufacturing |
| Product Type | Complete Lower Receiver |
| Caliber | 5.56 NATO / .223 Remington |
| Action | Semi-Automatic |
| Pattern | M4 |
| Material | Aluminum |
| Finish | Anodized |
| Stock Color | Black |
| Buffer Tube Positions | 6 Position |
| Trigger | Open Trigger |
| Grip | Standard M4 |
| Included Components | Lower Parts Kit, 6-Position Buffer Tube Assembly |
| FFL Required | Yes |
Yes. As a regulated firearm component, this lower receiver requires an FFL to transfer. You'll need to arrange transfer through a licensed dealer in your area.
This is a standard mil-spec M4-pattern lower, so it accepts any AR-15 upper receiver built to mil-spec dimensions. Caliber compatibility depends on your upper; the lower itself is marked for 5.56 NATO and .223 Remington.
The lower parts kit and 6-position buffer tube assembly come pre-installed. You're ready to attach an upper receiver and go. No additional lower assembly work is required.
Yes. The included 6-position buffer tube lets you set the stock length to your preference, so you can dial in the fit for your shooting style or body type.
SKU: 120912004 • Weight: 2.4oz
Availability: In Stock
Current Stock: Out of stock
The Anderson Manufacturing AR-15 complete lower receiver is a ready-to-assemble platform that puts you one upper away from a finished rifle. Built from aluminum with precision manufacturing, this M4-pattern lower arrives with the lower parts kit and buffer tube assembly already installed—so you skip the tedious assembly phase and get straight to the range or field. It's the same lower Anderson uses in their own AM-15 rifles, which tells you something about the confidence they have in the design and build quality.
If you're building your first AR-15 or your tenth, a complete lower receiver handles the regulatory and mechanical heavy lifting. The semi-auto action is chambered for 5.56 NATO or .223 Remington, giving you flexibility in ammunition choice. The anodized finish protects the aluminum against corrosion, and the included 6-position buffer tube kit lets you dial in the stock length to your preference. A standard M4 grip and open trigger round out the package—familiar controls that need no introduction to anyone who's shot an AR platform.
This lower is spec-compliant and ready to accept any standard AR-15 upper receiver assembly. Whether you're planning a lightweight varmint rig, a hunting rifle, or a tactical build, starting with a proven Anderson lower gives you a solid foundation that won't nickel-and-dime you with fitment surprises. Note that an FFL is required to take possession of this lower receiver.
| Manufacturer | Anderson Manufacturing |
| Product Type | Complete Lower Receiver |
| Caliber | 5.56 NATO / .223 Remington |
| Action | Semi-Automatic |
| Pattern | M4 |
| Material | Aluminum |
| Finish | Anodized |
| Stock Color | Black |
| Buffer Tube Positions | 6 Position |
| Trigger | Open Trigger |
| Grip | Standard M4 |
| Included Components | Lower Parts Kit, 6-Position Buffer Tube Assembly |
| FFL Required | Yes |
Yes. As a regulated firearm component, this lower receiver requires an FFL to transfer. You'll need to arrange transfer through a licensed dealer in your area.
This is a standard mil-spec M4-pattern lower, so it accepts any AR-15 upper receiver built to mil-spec dimensions. Caliber compatibility depends on your upper; the lower itself is marked for 5.56 NATO and .223 Remington.
The lower parts kit and 6-position buffer tube assembly come pre-installed. You're ready to attach an upper receiver and go. No additional lower assembly work is required.
Yes. The included 6-position buffer tube lets you set the stock length to your preference, so you can dial in the fit for your shooting style or body type.
SKU: 120912004 • Weight: 2.4oz