P320 manual safety assembly video thumbnail

P320 Manual Safety Assembly Video

P320 FCU Manual Safety Assembly Video

Our P320 Manual Safety FCU assembly video shows you how I assemble the manual safety FCU. Although there are some slight differences between the standard and the manual safety versions of the P320 FCU, most of the concepts are the same between the two. For instance, the safety lever pin on the standard FCU is replaced with the Left Side Manual Safety and is installed from the left side instead of the pin being installed from the right side. 

This video features the JSD Supply MUP-1 80% FCU that has been modified by AB Prototype for the Manual Safety. AB Prototype can also modify your existing P320 FCU for the Manual safety if you want. 

While you are on our site, don’t forget to check out our other P320 content.

For the tools that we used on the Sig P320 videos visit https://trb.fyi/tools-used-in-the-p320-disassembly-and-reassembly-videos. If you would like to learn how to build an 80% P320 FCU check out our P320 80% Frame Completion. We also have content on how to disassemble and reassemble the P320 Slide. 

P320 Manual Safety Assembly Video Index:

Installing the sear housing – 0:37

Pre-installing the takedown safety – 2:02

Installing the sear springs – 3:14

Installing the safety lever and sear – 3:42

Installing the right-side safety – 5:24

Installing the trigger bar and trigger – 7:31

Installing the slide stop – 10:02

Additional content/bloopers – 12:11

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