[Zack The Ripper]

Your trigger box/assembly might have been assembled/reassembled incorrectly if this is a used gun you purchased. If this is the case, go on YouTube, and find an instructional for disassembly and reassembly of the trigger box and its components. The sear might not be installed properly.

If this is an issue that has just started, then your sear likely is damaged in some way, or it has become loosened through use. Again, I would find a video that shows the sear in detail and compare to your sear for any malformations/dysfunctions. A simple bend too far in one direction or loose wobble can cause major issues in trigger operation.