Class size is LIMITED so sign up early and if you find you can’t make it, please release your RSVP!
The lower receiver is the foundation of the AR-15 system, and incorrect component selection or assembly can lead to reliability, recoil, and cycling problems. This FREE hands-on course focuses on assembling an AR-15 lower receiver using correct tools, specifications, and techniques.
Students will learn how lower receiver components interact with caliber, barrel length, and gas system configuration, with specific emphasis on buffer system selection and setup. Proper installation methods and torque values are covered to ensure safe, consistent operation. You may bring your own parts and complete them during this course. Be sure to also sign up for our AR-15 UPPER Build Course which immediately follows this one on the same day.
Topics covered include:
This course is designed to give students a solid technical understanding of lower receiver assembly and configuration decisions.
Instructor Bio – Shep
Shep is TruPrep’s in-house armorer with deep experience across military, federal, and law-enforcement environments. At TruPrep, Shep serves as the primary armorer, responsible for evaluating rifle setups, correcting build issues, and performing modifications. In addition to his roles at TruPrep, Shep provides training, armorer services, and technical support to various professional agencies. He is widely regarded locally for his attention to detail and his insistence on correct specifications, proper tooling, and disciplined assembly practices rooted in real-world operational use
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