Sear Trip and Anti-Bounce Weight Installation

Published on November 7, 2025
Duration: 3:35

This guide details the installation of the sear trip kit and anti-bounce weight (or forward assist adapter) into a CMMG 22LR conversion kit for an AR-15. The process involves aligning specific tabs and notches on the components with the conversion kit and bolt carrier group. Proper installation ensures correct cycling and potential engagement with auto sears or FRT triggers.

Quick Summary

To install the CMMG 22 conversion kit's sear trip and anti-bounce weight, first slide the anti-bounce weight onto the guide rod plate, aligning its notch with a tab. Then, position the sear trip kit with its tabs facing up, aligning them with the conversion kit's notches and resting its front under the bolt's tab. Finally, carefully insert the conversion kit into the AR-15 upper receiver.

Chapters

  1. 00:00Introduction and Overview
  2. 00:31Required Components
  3. 00:45Installing Anti-Bounce Weight/Forward Assist Adapter
  4. 01:38Installing Sear Trip Kit
  5. 02:48Holding Components Together
  6. 03:04Inserting Conversion Kit
  7. 03:21Conclusion

Frequently Asked Questions

How do you install the anti-bounce weight on a CMMG 22 conversion kit?

The anti-bounce weight or forward assist adapter slides onto the plate under the rear of the conversion kit, aligning a notch with a tab on the guide rod plate. It prevents rearward movement but may still shift sideways until installed in the upper receiver.

What is the purpose of the sear trip kit in a 22LR conversion?

The sear trip kit is installed in the CMMG 22 conversion kit to interact with the AR-15's auto sear, potentially enabling automatic fire. It also plays a role in compatibility with certain FRT triggers.

How do you install the sear trip kit into a CMMG 22 conversion?

The sear trip kit has upward-facing tabs that align with notches in the conversion kit. Its front smooth part rests under the bolt's rear tab, and it rocks into place, ensuring the tabs engage the notches.

Can I use a sear trip kit with any FRT trigger?

While the sear trip kit is often needed for FRT triggers with 22LR conversions, it's recommended to check compatibility with your specific FRT trigger. Some heavier triggers may not function optimally.

More Gunsmithing & DIY Videos You Might Like

More from CMMG

View all →