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Chen Thumb Safety

$74.99 - $79.99
22 reviews Write a Review
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  • Manufactured in the USA

The Thumb Safety -1911 shooters know how important it is to get this one part right. Every draw stroke, press check, shot fired, reholster...involves interacting with the thumb safety.

Done wrong, the thumb safety can be a constant source of irritation. Sharp edges, lousy action and poor fit to the shooter can make running a 1911 a chore.

Done right however, say by a high end custom 1911 builder, the thumb safety helps the pistol become a natural extension of the shooter. It should fit well under the thumb, be devoid of any sharp edges, and offer a positive action with every flick on and off. Shooting and handling the pistol now becomes an effortless joy.

That is what we've captured in the Chen Thumb Safety. Right out of the box, without having to have a gunsmith 'rework' a safety until it works, feels, and looks right. We believe the Chen Thumb Safety is perhaps the most 'finished' thumb safety on the market today.



Ergonomically Sculpted Lever. Follows the natural curves of the thumb for ultimate shooter comfort.

Fully Dehorned. Every edge is carefully broken or radiused for shooter comfort.

Clean, Flowing Lines. Lines you would expect from a high end custom pistol, after the pistolsmith has spent a considerable amount of time shaping, blending and sculpting the part.

Positive Engagement. Crisp and clean engagement. Detent geometry was tuned and modified so that the safety positively snaps either on or off. There is no muddy, wishy-washy feel, nor any "bounce" at the bottom of the stroke.

Integrated Design Designed in conjunction with the Chen Beavertail Grip Safety. The two parts meld together when fitted together properly.

Precision Machined. Meticulously Manufactured IN-HOUSE. Incredibly tight tolerances throughout. The shaft is perfectly concentric and held to max tolerance to aid in more precise function and fit with the grip safety. It is also dead nuts parallel with the safety paddle, also enhancing fit and function.


These parts are made on high-end, extremely rigid and accurate Japanese machinery capable of mold-making precision. Multi-axis machining techniques allow for extreme dimensional consistency, leading to more precise fitting to the pistol.

These are made under my personal watchful eye. No dickering with vendors, no accepting something that's "good enough" because you don't want to hassle with sending back a batch that wasn't quite right. Here, it either meets my extremely high standards or it goes in the scrap bin. Period.


Three lengths available. 

This is not a drop-in part. While the Chen thumb safety was designed to be as finished as possible, it does require fitting of the safety to the sear for installation.

22 Reviews

  • 5
    Chen Thumb Safety

    Posted by Billy on 17th Jul 2023

    Outstanding quality on these safeties. Finish and design are flawless. Easily fit to my SA Operator to replace the factory ambi. Looks and functions excellent. Positive engagement in the on and off positions. A perfect match to the Chen SI magwell. Only complaint is there isn’t a matching slide stop yet.

  • 5
    Just installed first time beautiful piece

    Posted by Mitchell Cornacchia on 6th Feb 2023

    Great piece I took my time and fitted perfectly I wish you sold a matching slide saftey as well!

  • 5
    Thumb safety

    Posted by Rich Johnson on 17th Jan 2023

    Outstanding instruction for fitting safety are straight forward and easy to fallow.very high quality part.

  • 5
    High Quality Upgrade

    Posted by Rufus J Wheeler on 25th Sep 2022

    Fitting was a breeze and the paddle eleminates the sharp corner on the rear of my Garrison mil-spec paddle. Fitting was simple and took about ten or fifteen minutes. Looks factory and works a treat.

  • 5
    SS thumb safety

    Posted by Unknown on 15th Sep 2022

    This safety is VERY ergonomic and really makes this build have that custom look

  • 5
    Thumb Safety

    Posted by Harold Cline on 26th Aug 2022

    I installed the Stan Chen Thumb Safety on my 1911. Some fitting was required, so have a small file and some patience handy. This thumb safety was an excellent upgrade over OEM and improved both tactile and audible feedback.

  • 5
    Love it

    Posted by Unknown on 9th Aug 2022

    Not normally one to write reviews, but this thing rocks! First time doing any real fitting of 1911 parts, and the included instructions were fantastic. Can’t beat the free m&m’s either

  • 5
    Thumb safety medium

    Posted by Bill Cohen on 6th Dec 2021

    Wow. My Les Baer UTC came with a thumb safety that was digging in to my thumb bad. I shaved it down but still hurt my thumb. Bough an EGW and installed it only issue was it did not look right on gun. Decided to try Stan Chen Thumb Safety medium. Wow!! Finish is perfect nice smooth flowing lines and best rear contour I have seen out of the box. Thick baseplate so plunger stays in place if you know what I mean. Fitting was a breeze if you file slow and even. Post fits perfect keeps beavertail from moving side to side if you know what I mean. Positive clicks and it follows the shape of my thumb. No sharp edges and is baby smooth.100% satisfied. Ordering one for my Wilson combat CQB compact.

  • 5
    Customer review

    Posted by Thomas Terrell on 26th Oct 2021

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