The Anderson Manufacturing Complete AR-15 Lower Receiver (part no. B2K402A000) skips the parts shopping list, arriving with a full mil-spec lower parts kit already installed, an open trigger guard, a standard M4 grip, and a 6-position buffer tube and stock. Anderson builds this receiver so it is ready to attach an upper right out of the box, making it one of the fastest ways to get a build running. It is multi-caliber compatible and, like any complete lower receiver, requires an FFL transfer for purchase.

Key Specifications

• Ships with a mil-spec lower parts kit fully installed.
• Features an open trigger guard design.
• Includes a standard M4 grip.
• Fitted with a 6-position buffer tube and stock kit.
• Ready to attach an upper straight out of the box.
• Measures 16 inches in overall length.
• Multi-caliber compatible with standard AR-15 pattern uppers.
• Includes a flared magwell for faster, snag-free magazine changes.
• Ships with a mil-spec single-stage trigger installed as part of the complete lower parts kit.

Frequently Asked Questions

Does this lower come with parts installed? Yes, it ships complete with a mil-spec lower parts kit, M4 grip, and 6-position buffer tube and stock already installed.

Can I attach an upper right away? Yes, this complete lower is ready to accept an upper as soon as it arrives.

Does this require an FFL transfer? Yes, as a complete lower receiver it must transfer through your local FFL like any other firearm.

Buy the Anderson Manufacturing Complete AR-15 Lower Receiver

Skip the parts shopping list with a complete Anderson Manufacturing lower. Browse more AR-15 lower receivers and order from our Lubbock, Texas gun shop for fast, insured shipping to your FFL.