Stop settling for gritty, inconsistent "mil-spec" parts. The EGW Evolved Lower Parts Kit is the definitive upgrade for any AR-15 builder seeking superior quality, a smoother feel, and long-term reliability. We've replaced cheap MIM (Metal Injection Molded) parts with precision-machined components made right here in our Pennsylvania facility. This is the quality foundation your custom AR-15 build deserves.

What's Included (And What Isn't)

This kit includes all the pins, springs, and detents needed to complete a stripped AR-15 lower receiver. We intentionally do not include the "fire control group" (trigger, hammer, disconnector), pistol grip, or trigger guard. This allows you, the builder, to choose the specific high-performance trigger and ergonomic accessories that best fit your build, without having to pay for standard parts you won't use.

The EGW Difference: Machined for Perfection

The secret to a smooth, reliable AR-15 lies in the quality of its smallest components. Here’s why our kit is a superior choice:

• Precision-Machined, Not MIM: Every major component, including the bolt catch, magazine catch, and takedown pins, is CNC machined from solid steel. This eliminates the microscopic voids and inconsistencies found in cheaper MIM parts, resulting in greater strength and a smoother-feeling action.
• Corrosion-Resistant QPQ Finish: Key steel components are treated with a QPQ (Quench Polish Quench) finish, a hardened case nitride that provides exceptional lubricity and superior resistance to corrosion and wear.
• Stainless Steel Springs: We use high-quality stainless steel for all our springs, ensuring they maintain their tension over a lifetime of use and will not rust or corrode.
• Made in the USA: From the raw material to the final finish, every component in this kit is proudly made in the USA.

Complete Parts List:

• Bolt Catch
• Bolt Catch Plunger
• Bolt Catch Roll Pin
• Bolt Catch Spring
• Buffer Retainer
• Buffer Retainer Spring
• Magazine Catch
• Magazine Catch Button
• Magazine Catch Spring
• Pivot Pin
• Takedown Pin
• (2) Takedown / Pivot Pin Detents
• (2) Takedown / Pivot Pin Detent Springs