Quick Answer
A sticky trigger can be caused by debris accumulation, worn-out components, or improper maintenance, requiring thorough cleaning, lubrication, and inspection of trigger components to resolve the issue.
Inspecting and Cleaning the Trigger
Inspect the trigger for any debris accumulation, corrosion, or damage. Remove the lower receiver to access the trigger components. Use a small brush to sweep away any debris and a soft cloth to wipe down the trigger components. Pay particular attention to the sear, trigger pin, and disconnector.
Lubricating the Trigger
Apply a small amount of lubricant, such as silicone spray or lithium grease, to the trigger components. Focus on the sear, trigger pin, and disconnector. Use a small drop of lubricant and wipe off any excess with a soft cloth to avoid attracting debris. This will help to reduce friction and prevent the trigger from sticking.
Adjusting the Trigger
If cleaning and lubrication do not resolve the issue, you may need to adjust the trigger’s overtravel or sear engagement. Use a trigger pull gauge to measure the trigger’s overtravel, and adjust the sear engagement accordingly. For example, if the overtravel is set too high (6-8 pounds), reduce it to 3-5 pounds by adjusting the sear engagement. This will help to improve trigger feel and prevent the trigger from sticking.
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