Intermittent trigger problem with S&W 1911

[Woodworker2]

[OofieXD]

I'm not sure if the S&W 1911's come with it, but could it be the overtravel screw on the trigger?

[dfletcher]

My first thought is also an overtravel screw - does this 1911 have it? You would see it from the side or feel for an open spot on the face of the trigger. A simple allen screw is usually all that's needed to back it out. When the trigger does get heavy and you press, is there any free travel at all after the hammer falls?

[Sheldon]

According to the S&W website the DK models come with an adjustable overtravel trigger, so it's a good bet this is the problem. It may have been adjusted wrong or it tightened up as you have been shooting the pistol. As mentioned back it out a quarter turn at a time as you try the trigger.