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Upgrade your 1911 Auto with the John Masen Grip Safety/Thumb Safety, featuring U.S.-made, high-quality carbon steel for perfect fit and reliable function.
-11 %

JOHN MASEN SAFETY LOCK (THUMB SAFETY) (B)

560453601

Filters:

Variations
Filters:
Variations:

Variations:

-11 %
Finish: Blued Hand: Right Make: 1911 Model: Government, Commander, Officers Style: Thumb Product no.: 560453601
In stock
32.9 GBP 2 £32.90 * £36.90
Finish: Stainless Steel Hand: Right Make: 1911 Model: Government, Commander, Officers Style: Grip Product no.: 560453502
In stock
29.9 GBP 1 £29.90 *
29.9 32.9 2 GBP
-11 %
MSRP £36.90
32.9 GBP £32.90

Prices inclusive of duty & VAT.

Product no.: 560453601

Mfr. No.: 4536B

Each and every part is U.S.-made, high-quality and guaranteed to fit and function just like the factory part.
In stock 2 pcs. in the USA warehouse
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-11 %
MSRP £36.90
£32.90

Prices inclusive of duty & VAT.

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Delivery time approx. 7-14 days.

Delivery time approx. 7-14 days.

No charges until we ship
No charge:
Your credit card will not be charged when you place your order.

No commitments:
You are under no obligation until the goods are shipped. You can cancel your order at any time before shipping - free of charge.

Not until shipping:
Your credit card will only be charged once we ship your order. Not before.
  • U.S.-made quality parts
  • Perfect fit and function
  • Available in blued or stainless
29.9 32.9 2 GBP
Description Specification Customers reviews Accessories

JOHN MASEN SAFETY LOCK (THUMB SAFETY) (B)

-11 %
MSRP £36.90
32.9 GBP £32.90

Prices inclusive of duty & VAT.

1
2
3
4
5
6
7
8
9
10+
-11 %
MSRP £36.90
£32.90

Prices inclusive of duty & VAT.

1
2
3
4
5
6
7
8
9
10+

Delivery time approx. 7-14 days.

Description:

Enhance Your 1911 with Quality U.S.-Made Parts

Introducing the 1911 GRIP SAFETY/THUMB SAFETY from JOHN MASEN, designed to provide superior reliability and performance for your 1911 Auto Pistol.

Product Features:

  • U.S.-Made Quality: Each part is crafted in the USA, ensuring high standards of quality and durability.
  • Perfect Fit: Guaranteed to fit and function just like the original factory part.
  • Material: All parts are made from carbon steel for enhanced strength.
  • Finish Options: Available in blued finish (indicated by (B)) or stainless steel (indicated by (S)).

Specifications:

Compatible with the 1911 Auto. Choose the finish that best suits your style and needs.

Upgrade your firearm with the JOHN MASEN SAFETY LOCK (THUMB SAFETY) and experience the difference that high-quality American craftsmanship can make.



Attributes

  • Finish:
    Blued
  • Hand:
    Right
  • Model:
    Commander
    ,
    Government
    ,
    Officers
  • Style:
    Thumb
  • Weapon type:
    1911
  • Delivery weight: 0.009kg
  • Shipping height: 4mm
  • Shipping width: 80mm
  • Shipping length: 122mm

Item details

Made in USA
US export classification: 0A501.x

Customers reviews

Customer ratings (11)

2.3 / 5
Slightly recommend

Brownells USA 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.

Not recommended

Brownells USA 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.

Variations:

-11 %
Finish: Blued Hand: Right Make: 1911 Model: Government, Commander, Officers Style: Thumb Product no.: 560453601
In stock
32.9 GBP 2 £32.90 * £36.90
Finish: Stainless Steel Hand: Right Make: 1911 Model: Government, Commander, Officers Style: Grip Product no.: 560453502
In stock
29.9 GBP 1 £29.90 *

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