cc-settings-icon BUILD AT HOME
80% Arms sells AR-15 and .308 80% Lower Receivers, 80% Lower Jigs and other accessories which allow you to legally build a firearm at home in most states.
We utilize state of the art 5-axis CNC machines to mill all our .308 and AR-15 80 percent lower receivers to incredibly precise tolerances using premium billet aluminum.
We also offer our patented AR-15 and .308 Easy Jigs® which is the first 80% lower jig that makes it ridiculously easy for a non-machinist to finish their 80% lower in under 1 hour with no drill press required.
Products manufactured by 80% Arms carry a lifetime warranty against manufacturing defects. We will promptly replace or repair any product that we determine to be defective.

Smith Defense - G19 Frame Completion Kit - 9MM

Calculated at Checkout
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Introducing the Smith Defense (SD) G19 Lower Parts Kit – a testament to the intersection of precision, quality, and craftsmanship that is synonymous with Smith Defense.

Why Choose Smith Defense for Your GST-9 Pistol Frame Builds?

The SD G19 Lower Parts Kit is meticulously designed for your GST-9 Pistol Frame builds. Each component in this kit has undergone our quality assurance process making this kit is the go-to choice for the modern firearm enthusiast. Every piece is a testament to detailed craftsmanship, ensuring you're equipped for peak performance right out of the box. They’re tested, retested, and examined using industry-leading methods, guaranteeing a fit and function that surpasses industry standards. With this kit, you're not just getting parts; you're getting a commitment to precision. 

Smith Defense is more than just a brand; it's a promise. We stand as a testament to uncompromised quality and relentless dedication to the firearms community. Rooted in Texas, Smith Defense encapsulates a blend of time-honored craftsmanship with state-of-the-art innovation. With over a decade in the industry, we've honed our craft, making sure every product lives up to our own high standards for quality and dependability. Opt for the SD G19 Lower Parts Kit and feel the difference.

What’s in the Kit?

  • Aluminum Trigger Shoe with Trigger Bar: Crafted with precision, ensuring a smooth trigger pull for your GST-9.

  • Trigger Pin & Spring: Manufactured to provide consistent performance.

  • Trigger Housing with Ejector: Designed for a flawless ejection every time.

  • Extended Slide Lock with Spring: Provides an enhanced grip, ensuring easy operation.

  • Slide Stop & Spring: Made for durability and reliability.

  • 5lb Connector: Boosting firearm functionality and safety.

  • Extended Magazine Release Button & Catch Spring: For swift and hassle-free magazine changes.

All components proudly carry the Smith Defense name, reflecting our commitment to excellence, unparalleled performance, and durability of our products.



Please note this item is restricted from shipping to California, Connecticut, New Jersey, New York, Washington D.C, Washington, Hawaii, Colorado, City of Philadelphia Pennsylvania, Maryland, Illinois, and Rhode Island.