Lower Receiver Set Screw and Roll Pin Screw Replacement Set | Polymer80

About this product

Lower Receiver Set Screw and Roll Pin Screw Replacement Set

This essential replacement set from Polymer80 includes the critical threaded components for maintaining the integrity and functionality of your premium 80% lower receivers. Designed specifically for compatibility with Polymer80’s Premium 80% Lowers (Fire/Safe Marked Billet) and AR-9 (9MM) 80% Lowers (Billet), this kit ensures your firearm build remains secure and reliable with upgraded fittings.

Key Features and Technical Specifications

• Bolt Catch Roll Pin Set Screw: 6/32″ size, threaded for enhanced durability and ease of installation.
• Rear Takedown Detent Set Screw: Threaded design to prevent loosening and improve takedown stability.
• Tool Compatibility: Both screws can be installed using a standard 1/16″ hex key, making adjustments straightforward for any gunsmith or DIY enthusiast.
• Material: High-quality steel construction for corrosion resistance and long-lasting performance in various environmental conditions.

Compatibility and Usage

This replacement set is engineered for use with Polymer80’s billet lower receivers, which feature threaded bolt catch and takedown detent fittings for superior reliability compared to traditional roll pins. It is ideal for AR-15 and AR-9 platforms, ensuring a snug fit and reduced risk of parts failure during operation. Whether you’re completing a new build or performing maintenance, these screws help maintain the precision and safety of your firearm.

Why Choose Polymer80?

With years of expertise in the firearms industry, Polymer80 delivers products that meet high standards of quality and performance. This replacement set reflects our commitment to providing durable, easy-to-install components that enhance your shooting experience. Always follow local laws and safety guidelines when working on firearm builds.