Thumb Safety Malfunction

[.45addict]

BNIB M1911 has a thumb safety that does not function properly. With the hammer cocked, safety engaged, trigger is pulled, safety lever disengages and hammer drops. What is the cause of this?

[Spindly61]

Sounds like a bad thumb safety.The thumb safety blocks the sear from moving and releasing the hammer. The pistol should not have left the factory that way. There is a misalignment there or a defective part. I would look at where the sear and safety engage. Assemble the pistol without the pistol grips and grip safety and look very carefully at what is happening. Being a new in the box pistol I would send it back just to make sure. Depending on the manufacturer, it should be done under warranty.

[garrettwc]

Spindly is on the right track but we need a little more info.

safety lever disengages
Do you mean the safety doesn't work, or are you saying the safety lever actually moves to the off position?

[.45addict]

With the hammer in full cock position, safety on, pull the trigger, the thumb safety moves down and the hammer drops all in one motion.

[wichaka]

The safety is not fitted properly to the sear. Could be a minor fitting issue, or could need a new safety.

[garrettwc]

I'm with Wichaka, fitting issue. I'm leaning more towards the major side though. It needs to go to a 1911 smith and get checked out.

[.45addict]

Thanks all for the input. I've contacted the manufacturer's rep and it's going back. This pistol is replacement for one that had issues...hmmmm!?