Supercharged My MP5 Clone with Geissele!

Published on May 25, 2025
Duration: 20:08

This video details the process of installing an AR lower receiver, specifically the Lee Sporting LS5, onto a PTR9CT MP5 clone. It highlights the installation of a Geissele SDG3 trigger and Radian safety selector, along with addressing a common issue where the Geissele hammer may require polishing by a gunsmith to ensure proper bolt cycling. The presenter expresses satisfaction with the upgrade, noting the improved trigger pull weight and overall feel.

Quick Summary

The PTR9CT MP5 clone was upgraded with a Lee Sporting LS5 AR lower receiver and a Geissele SDG3 trigger. This modification requires careful installation, and the hammer may need polishing by a gunsmith to ensure proper bolt cycling. The SDG3 trigger offers a lighter pull weight (2.5-3.5 lbs) compared to the stock trigger.

Frequently Asked Questions

What are the key components installed on the PTR9CT MP5 clone in this video?

The PTR9CT MP5 clone was upgraded with a Lee Sporting LS5 AR lower receiver, a Geissele SDG3 single-stage trigger, a Radian safety selector, and a Kung Fu grip. An Odin Mini Oite optic was also mentioned.

What issue might arise when installing a Geissele SDG3 trigger in an MP5 clone, and how is it resolved?

The Geissele SDG3 trigger's hammer may fit too high, preventing the bolt from cycling fully. This is resolved by having a gunsmith polish the hammer to ensure proper function.

What is the trigger pull weight of the Geissele SDG3 compared to the stock PTR9CT trigger?

The Geissele SDG3 trigger offers a pull weight of approximately 2.5 to 3.5 pounds, which is a significant improvement over the stock PTR9CT trigger, estimated at around 9 pounds.

Does subsonic 9mm ammunition offer a noticeable sound reduction when suppressed?

In this specific setup with a suppressor, the presenter found that subsonic 9mm ammunition did not provide a significant sound reduction compared to supersonic rounds, questioning its benefit for noise suppression.

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