How to Insert Handgun into MX-1 Chassis Guide

How do I insert my firearm into the MX-1 Conversion Chassis?

Learning the correct method of inserting your firearm into the MX-1 chassis system ensures a perfectly secure fit, repeatable accuracy, and reliable mechanical function. Follow these steps carefully for a smooth and safe bench assembly.

📺 Video Tutorial: Handgun Insertion Guide

If you want a visual demonstration of the alignment and hand placement steps, click the link below to watch our master armorer complete the workflow:

🛠️ Step-by-Step Insertion Process

📍 Step 1: Remove the Frame Retention Pin

Locate the captive-style frame assembly pin situated at the upper rear section of the conversion chassis. Push the pin completely out from the side and set it aside in a secure spot on your workbench tray.

🚪 Step 2: Open the Rear Door Mechanism

Firmly grasp the rear housing door of the MX-1 unit and slide it all the way to the back. Fully extending this rear entry gate opens up the necessary interior track space to slide your host firearm cleanly into the receiver block.

🤲 Step 3: Establish Hand Positioning and Alignment

  1. Use your weak hand to firmly grip the forward M-LOK or Picatinny accessory side rails of the chassis. This stabilizes the frame and prevents twisting.

  2. With your strong hand, grasp the grip frame of your unloaded handgun.

  3. Position the firearm so it is completely parallel to the internal tracking rails of the chassis.

⚡ Step 4: Insert and Lock the Firearm Home

Push the firearm straight forward into the open rear gate, keeping it entirely parallel to the frame alignment plane. Continue pushing smoothly forward until you hear and feel a distinct mechanical "click." This indicates that your handgun's accessory rail has fully engaged and locked into the primary chassis frame lock.

🔒 Step 5: Secure the Rear Housing

  1. Slide the rear entry door completely forward back into its closed battery position.

  2. Reinsert the rear retention pin through the alignment channels, pushing it completely home until it sits flush. Your firearm is now entirely secure and ready for safe range deployment.

    • Related Articles

    • How to swap or replace the beavertail adapter spacer on the MX-1

      Swapping the beavertail adapter insert on your MX-1 is a straightforward process that ensures a proper fit, seamless frame alignment, and optimal ergonomic comfort for your specific host firearm. Follow this step-by-step breakdown to replace your ...

    • Sales & Bundles: MX-1 Chassis + 9" Threaded Barrel Package

      Looking to purchase your conversion kit and extended match barrel together while saving money? Our core combo package is designed to get you up and running right out of the box. ? What is Included in the Combo Bundle? This promotional package pairs ...

    • Which handguns are compatible with the MX-1 Conversion Kit?

      The MX-1 redefines the conversion kit landscape by delivering an all-in-one chassis designed for ultimate versatility. Forget the days of juggling multiple systems—this is the one chassis to rule them all. Don’t See Your Gun Model For Our Kits? Tell ...

    • How to Install the MX-1 Frame Adapter on Glock 26 and Glock 27

      Because standard factory Glock 26 and Glock 27 subcompact frames lack an accessory mounting rail, the MX-1 Conversion Kit utilizes a specialized clam-shell adapter to establish a rock-solid structural lockup. Follow this guide to properly mount the ...

    • MX-1 Conversion Chassis Unboxing: Standard Package Contents

      Welcome to your MX-1 unboxing guide! In this article, we will walk you through the contents of your MX-1 package so you can familiarize yourself with all the included components. This will help ensure you have everything needed for a smooth, ...