AR-9 80% Lower Assembly – Fire/Safe Marked | Polymer80

About this product

Build Your AR-9 Rifle or Pistol with Ease

Simplify your AR-9 build with the Polymer80 AR-9 80% Lower Assembly – Fire/Safe Marked. This complete kit eliminates the guesswork of parts compatibility and ensures reliable performance with 9mm AR uppers. Perfect for DIY enthusiasts, it includes everything needed for a seamless assembly process.

Key Features and Technical Specifications

• Compatibility: Designed exclusively for use with GLOCK® OEM and Elite Tactical Systems magazines, and works with standard 9mm upper receivers.
• Construction: Made from 6061-T6 billet aluminum with Type III Hard anodized finish (mil-spec) for durability.
• Enhanced Design: Includes an integrated AR9 ejector, threaded bolt catch hole with pin, and a heavy-duty trigger guard.
• Made in the USA: 100% American-made, ensuring quality and reliability.

What’s Included in the Kit

This all-in-one assembly features:

• AR-9 80% Lower Receiver: Fire/Safe marked for added safety and compliance.
• Lower Parts Kit: Contains all necessary components like bolt catch, hammer, trigger, pins, springs, and an A2-style pistol grip.
• Buffer Kit with Brace: Equipped with an SBA3 Tactical Pistol Brace, mil-spec buffer tube, 9mm buffer, recoil spring, latch plate, and castle nut for optimal performance.

Why Choose Polymer80?

With years of expertise in firearm components, Polymer80 delivers trusted products for builders. This kit is ideal for creating a custom AR-9 pistol or rifle, offering ease of assembly and compatibility with popular parts. Always follow local laws and regulations when building firearms.

Note: This product is an 80% lower and requires finishing to become a functional receiver. Not available in restricted states; check shipping restrictions before purchase.