Rebuilding a POS PCC | BUILD BOX

Published on October 15, 2024
Duration: 22:08

This video details the process of transforming an unreliable 9mm Pistol Caliber Carbine (PCC) into a dependable home defense firearm. Experts Ryan Gresham, Kevin Jarnagin, and Chris Cerino guide the rebuild, emphasizing the use of a dedicated Aero Precision EPC-9 lower receiver and components like the Stern Defense RAB-AD and Magpul D-50 drum magazine. The original AR-15 lower is repurposed for a separate Retro AR-15 build, showcasing expert gunsmithing and component selection for enhanced reliability and functionality.

Quick Summary

Upgrade your 9mm Pistol Caliber Carbine (PCC) for enhanced reliability by using a dedicated Aero Precision EPC-9 lower receiver. Incorporate a Stern Defense RAB-AD for quick stock detachment and a Magpul PMAG D-50 GL9 drum magazine for increased capacity. These components, along with a Leupold EFLX red dot, transform a problematic build into a dependable firearm.

Chapters

  1. 00:00The Problematic PCC
  2. 02:09Inspection and Diagnosis
  3. 03:51The Rebuild Plan
  4. 06:33Nook of Knowledge: Mag Adapters
  5. 07:19Installing Specialized Components
  6. 11:50Retro AR-15 Build
  7. 15:52Range Testing and Final Reveal

Frequently Asked Questions

What are the key components for upgrading a 9mm Pistol Caliber Carbine (PCC)?

Key components for upgrading a 9mm PCC include a dedicated Aero Precision EPC-9 lower receiver for reliability, a Stern Defense RAB-AD for quick stock detachment, a Magpul PMAG D-50 GL9 drum magazine for increased capacity, and a Leupold EFLX red dot sight for aiming.

Why is a dedicated 9mm lower receiver better than a magazine adapter for a PCC?

A dedicated 9mm lower receiver, like the Aero Precision EPC-9, is designed with the correct feed ramp geometry and tolerances for 9mm ammunition, ensuring significantly better reliability and fewer feeding issues compared to using a magazine adapter on a standard AR-15 lower.

How can a PCC be made more compact for storage?

To make a PCC more compact for storage, install a Stern Defense RAB-AD (Rapid Attach Buttstock Adapter). This allows the buttstock to be quickly detached, reducing the overall length of the firearm considerably.

What tools are recommended for building or modifying an AR-9 or PCC?

Recommended tools for AR-9 and PCC builds include a Real Avid Smart-Fit Vise Block for Glock and AR-9 platforms, essential for securely holding receivers during assembly and modification.

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