The Firing Line Forums - View Single Post - M4/M16 full auto trigger , How does it work

marine6680 · March 1, 2015, 01:04 AM

Burst mode uses a second "burst" disconnector that follow a ratcheting cam. Once the cam rotates through the three round burst, the burst disconnector is allowed to engage the hammer and prevent the hammer from falling again.

I found an animated video that explains all three types.

Here it is

There are 4 way selectors available too, that allow semi, burst , and auto.

In semi mode, the semi disconnector does its job.

In burst, the semi disconnector is disabled and the burst disconnector is working.

In auto the burst disconnector is disabled as well, and only the auto sear is engaged.

March 1, 2015, 01:04 AM	#11
marine6680 Senior Member Join Date: July 24, 2012 Location: Parker, CO Posts: 4,594	Burst mode uses a second "burst" disconnector that follow a ratcheting cam. Once the cam rotates through the three round burst, the burst disconnector is allowed to engage the hammer and prevent the hammer from falling again. I found an animated video that explains all three types. Here it is There are 4 way selectors available too, that allow semi, burst , and auto. In semi mode, the semi disconnector does its job. In burst, the semi disconnector is disabled and the burst disconnector is working. In auto the burst disconnector is disabled as well, and only the auto sear is engaged.