Brand: Griffin Armament
Model: MK1 Complete Lower
Platform: AR-15
Caliber: Multi-Caliber
Receiver Material: 7075-T6 Aluminum
Receiver Finish: Type III Hardcoat Anodized
Furniture Color: Black
Safety: Ambidextrous
Stock Material: Polymer
Stock Description: SBA-3 Pistol Brace
Grip Material: Polymer
Grip Description: Griffin A3 Hand Grip

Features

The MK1 Complete Pistol Lower from Griffin Armament provides a fully assembled, high-quality foundation for AR-15 pistol builds. Precision machined from high-grade 7075-T6 aluminum, this complete lower receiver is built to exact tolerances for reliable fitment with mil-spec components and consistent performance. A Type III hardcoat anodized finish enhances durability, offering strong resistance to wear, scratches, and chemical exposure for long-term use.

This AR-15 pistol lower includes all essential controls and features a mil-spec compatible configuration. The platform is equipped with a Maritime Receiver Extension, buffer spring, and H2 buffer for dependable cycling, along with dimpled takedown pins for improved handling. A Contour Connect QD end plate with integrated sling socket supports secure single-point or two-point sling attachment. With configurable grip and pistol brace options, this complete lower delivers a versatile and reliable base for custom AR pistol builds.

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If you live in California, please read this notice before ordering.

Shipping Restrictions

It is the customer’s responsibility for understanding state laws regarding all purchases made. For a comprehensive list of all Shipping Restrictions, please refer to our Shipping Restrictions By State Page found Here.

All NFA Rules Apply

These items are controlled by the U.S. Government and authorized for export only to the country of ultimate destination for use by the ultimate consignee or end-user(s) herein identified. They may not be resold, transferred, or otherwise disposed of, to any other country or to any person other than the authorized ultimate consignee or end-user(s), either in their original form or after being incorporated into other items, without first obtaining approval from the U.S. government or as otherwise authorized by U.S. law and regulations.

Magazines will be removed from firearms when shipping to states with magazine capacity restrictions.

Must be 21 or older to purchase.

WARNING: Handling firearms or firearms parts can expose you to lead and other petroleum products known to the State of California to cause cancer, birth defects, or other reproductive harm. Wash hands thoroughly after handling. For more information go to www.p65warnings.ca.gov (CA Health and Safety Code Section 25249.6).