Description

AR9 80% Lower Fire/Safe Marked – 9mm – Billet

Overview

This AR9 80% lower fire/safe marked – 9mm – billet component is a precision-machined platform for builders who prioritize a dedicated 9mm pistol caliber carbine (PCC) lower receiver. Manufactured from 7075-T6 aluminum billet, this 80% lower is designed to accept standard AR15 LPK components while maintaining the specific bolt catch geometry required for reliable 9mm feeding. The lower is pre-marked with crisp fire and safe selector engravings, eliminating the need for end-user marking post-completion. As a non-serialized 80% blank, this lower requires final machining of the fire control pocket and trigger pin holes before assembly. This AR9 80% lower fire/safe marked – 9mm – billet provides an optimal foundation for a custom 9mm AR build with a rigid, weight-efficient structure.

Features & Specs

Every AR9 80% lower fire/safe marked – 9mm – billet is machined to tight tolerances on a 5-axis CNC, ensuring consistent wall thickness and a seamless fit with mil-spec uppers. The billet construction eliminates casting porosity, offering improved material density compared to forged alternatives. This unit is compatible with standard AR15 buffer tubes, pistol grips, and trigger groups, though a 9mm-specific hammer is recommended for optimal primer strike. The magazine well is designed for Colt-style or Glock-style 9mm magazines depending on the user’s bolt and magazine adapter selection.

• Material: 7075-T6 aluminum billet, Type III hard coat anodized black
• Markings: Laser-engraved “FIRE” and “SAFE” selector markings on both sides
• Pocket: 80% complete – requires milling of trigger pocket and drilling of selector holes
• Weight: 9.2 oz (unmachined billet blank)
• Compatibility: Accepts AR15 LPK, 9mm bolt catch, and standard buffer system

Who It’s For

This AR9 80% lower fire/safe marked – 9mm – billet is intended for experienced builders and gunsmiths who possess the necessary milling equipment, jigs, and knowledge to complete an 80% receiver. It is ideal for those constructing a competition PCC, a lightweight truck gun, or a suppressed 9mm host build. The fire/safe markings eliminate guesswork during selector installation, and the billet construction provides a stiffer platform for suppressed operation. Novice builders should note that completing this lower requires a dedicated 80% jig, a router or mill, and proper safety equipment. This component is not a finished firearm and will not function until the fire control pocket is fully machined.

• Experienced DIY builders and hobbyists with 80% completion tools
• PCC competitors requiring a dedicated 9mm lower with crisp selector markings
• Gunsmiths offering custom AR9 builds for clients

Shipping & FFL

This item is classified as a non-firearm 80% lower receiver blank under current ATF guidelines. As an unfinished component, it does not require transfer through a Federal Firearms License (FFL) for shipping. However, the purchaser is solely responsible for complying with all federal, state, and local laws regarding the completion and possession of this component. Some states and localities (including but not limited to California, New York, New Jersey, Connecticut, Washington, and the District of Columbia) may restrict the sale, possession, or completion of 80% receivers. By purchasing this AR9 80% lower fire/safe marked – 9mm – billet, you confirm that you are legally eligible to possess a firearm component in your jurisdiction and that you will only complete the receiver in compliance with applicable law. We do not ship to P.O. boxes, APO/FPO addresses, or any jurisdiction where 80% receivers are prohibited. Please check your local statutes prior to ordering.

• No FFL transfer required for shipping
• Buyer assumes all legal responsibility for completion and use
• Cannot ship to restricted states or municipalities