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Product no.: 560453602
Mfr. No.: 4536S
Each and every part is U.S.-made, high-quality and guaranteed to fit and function just like the factory part.
Free shipping starting at £199.00.
1 In stock, delivery from UK warehouse within 2-3 days
The 1911 Grip Safety/Thumb Safety by JOHN MASEN is a premium replacement part designed specifically for the 1911 Auto Pistol. Each component is crafted in the U.S.A., ensuring top-notch quality and reliability.
This Thumb Safety is an essential upgrade for any 1911 enthusiast looking to enhance the reliability and performance of their firearm. Trust JOHN MASEN for high-quality gun parts that meet the demands of serious shooters.
Not the best 28/07/2018
The item I got had a very long arm that needed more than a little trimming, just to fit in the receiver. The receiver is an ATI - maybe suspect - but several old Colt safeties fit (and work) just fine.
Well folks, by the time I carefully fit the LENGTH of the arm, it became evident that the width of the arm (top to bottom) was insufficient to actually do anything. That is to say, the little nub at the end of the arm didn't swing down enough to intersect the back of the trigger bow. Bummer.
My first thought was that the hooks that intersect the top of the mainspring housing need adjustment to allow the safety to swing further. But this turned out not to be the case. Instead, after close comparison with the ATI grip safety and the old Colt grip safeties, its quite evident that this safety quite a bit "out of spec". Its like... its bent? Cant unbend it, but I can weld up the arm and recut the entire piece. However, if I wanted to resort to that, I could have just done that to the original (which did block the hammer somewhat, but allowed too much rearward travel, allowing the sear to partially disengage... nice, right from ATI that way, but heck its a $300 1911....!!!)
Sorry, this one's a dud.
Avoid 18/04/2018
The finish was better than expected, but when installed the arm did not contact the trigger stirrup. When compared to a surplus GI grip safety, the trigger block arm was significantly higher on the Masen part. Called technical support for advice and was told I should've bought a better quality grip safety.
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