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Handgun Parts Safety Parts Safeties HARRISON DESIGN & CONSULTING 1911 EXTREME SERVICE THUMB SAFETY BLUED Support

The 1911 Extreme Service Thumb Safety offers ergonomic comfort, rugged construction, and unique features for reliable performance during extended use.
-9 %

HARRISON DESIGN & CONSULTING 1911 EXTREME SERVICE THUMB SAFETY BLUED

100013877

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-9 %
The 1911 Extreme Service Thumb Safety offers ergonomic comfort, rugged construction, and unique features for reliable performance during extended use.
1911 EXTREME SERVICE THUMB SAFETY - 1911 EXTREME SERVICE THUMB SAFETY BLUED
104.9 GBP 2 £104.90 * £114.90
In stock
Finish: Blued Make: 1911 Model: Government, Commander, Officers Style: Thumb Product no.: 100013877
In stock
104.9 GBP 2 £104.90 * £114.90
-10 %
The 1911 Extreme Service Thumb Safety features ergonomic design, robust construction, and precise fit, enhancing comfort and reliability during extended use.
1911 EXTREME SERVICE THUMB SAFETY - 1911 EXTREME SERVICE THUMB SAFETY STAINLESS STEEL
94.9 GBP 4 £94.90 * £104.90
In stock
Finish: Stainless Steel Make: 1911 Model: Government, Commander, Officers Style: Thumb Product no.: 100013878
In stock
94.9 GBP 4 £94.90 * £104.90
-8 %
The 1911 Extreme Service Thumb Safety offers ergonomic comfort, rugged construction, and a unique design for reliable performance in extended firing sessions.
1911 EXTREME SERVICE THUMB SAFETY - TAC BLACK EXTENDED THUMB SAFETY
109.9 GBP 1 £109.90 * £119.90
In stock
Finish: Black Make: 1911 Model: Government, Commander, Officers Style: Thumb Product no.: 100015459
In stock
109.9 GBP 1 £109.90 * £119.90
The Harrison Design Extreme Service Thumb Safety offers ergonomic comfort, rugged construction, and unique features for reliability during extended use.
1911 EXTREME SERVICE THUMB SAFETY - TAC SS EXTENDED THUMB SAFETY
Not available
Finish: Stainless Steel Make: 1911 Model: Government, Commander, Officers Style: Thumb Product no.: 100015449
Not available
104.9 GBP 0 £104.90 *
94.9 109.9 4 GBP
-9 %
MSRP £114.90
104.9 GBP £104.90

Prices inclusive of duty & VAT.

Product no.: 100013877

Mfr. No.: HD-451

The Extreme Service thumb safety is the result of years of design and testing to develop a thumb safety that is ergonomically comfortable, rugged in construction and offers unique features that solve many of the problems with existing designs. The thumb shelf has an arced shape that is sculpted to meet the "plate" portion of the safety. The shelf is lowered slightly and rotated on the plate to better match up to the human hand. This makes the safety more comfortable in use over extended firing sessions. The positioning of the thumb shelf also helps keep the palm of your hand in deeper, more solid contact with the grip safety, so it's less likely that you'll have a failure to get the grip safety depressed and then keep it depressed, which could render your pistol unfireable at the worst time. The plate is made thicker than most other brands and is configured so that the safety plunger bears fully on the front of the plate, eliminating side thrust loading from being exerted against your plunger tube which can eventually loosen the tube’s mounting, allowing the plunger pin to climb over the safety's plate, potentially rendering the gun unfireable. An ample detent pocket and radius give a positive "click" as you move the safety on and off. The pivot shaft joins the plate with a generous radius which is crucial to prevent stress breakage of the plate/shaft joint as found on other brands. The blocking lug has an extra fitting pad on the rear of the lug allowing the gunsmith to regulate how far down the thumb safety can swing, which keeps the safety's plate from overhanging the edge of the frame. An industry first! The rear edge of the plate is beveled and blended where it meets the back edge of the frame, a feature lacking on other brands. Looks great and a complimentary design to the Harrison Design Extreme Service Slide Stop. On HD453 and HD454 the narrowed thumb shelf has an arced shape that is scuplted to meet the "plate" portion of the safety. The shelf is lowered slightly and rotated on the plate to better match up to the human thumb. This makes the safety more comfortable in use over extended firing sessions.
In stock 2 pcs. in the USA warehouse
5/5 - 6 Customers
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MSRP £114.90
£104.90

Prices inclusive of duty & VAT.

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Delivery time approx. 7-14 days.

100-Day Return Policy

Delivery time approx. 7-14 days.

100-Day Return Policy
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94.9 109.9 4 GBP
Description Specification Customers reviews Accessories

HARRISON DESIGN & CONSULTING 1911 EXTREME SERVICE THUMB SAFETY BLUED

-9 %
MSRP £114.90
104.9 GBP £104.90

Prices inclusive of duty & VAT.

1
2
3
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9
10+
-9 %
MSRP £114.90
£104.90

Prices inclusive of duty & VAT.

1
2
3
4
5
6
7
8
9
10+

Delivery time approx. 7-14 days.

100-Day Return Policy

Description:

Enhance your 1911 with the Harrison Design Extreme Service Thumb Safety!

The Extreme Service thumb safety is the culmination of years of meticulous design and testing, aimed at creating a thumb safety that is not only ergonomically comfortable but also rugged in construction. It incorporates unique features that address many common issues found in existing designs.

Key Features:

  • Ergonomic Design: The thumb shelf features an arced shape sculpted to align perfectly with the "plate" portion of the safety, enhancing comfort during extended firing sessions.
  • Improved Grip: The positioning of the thumb shelf ensures deeper, more solid contact with the grip safety, reducing the likelihood of failures to depress the grip safety.
  • Thicker Plate: Constructed thicker than most competitors, the plate configuration allows the safety plunger to bear fully on the front, preventing side thrust loading that could loosen the plunger tube.
  • Positive Engagement: An ample detent pocket and radius provide a satisfying "click" when engaging or disengaging the safety.
  • Durable Pivot Shaft: The pivot shaft connects to the plate with a generous radius, crucial for preventing stress breakage at the plate/shaft joint.
  • Adjustable Swing: The blocking lug features an extra fitting pad, allowing gunsmiths to regulate the thumb safety's swing, ensuring it doesn’t overhang the frame edge.
  • Beveled Edges: The rear edge of the plate is beveled and blended with the frame’s back edge, a feature that sets it apart from other brands.

This thumb safety not only looks great but also complements the Harrison Design Extreme Service Slide Stop. On models HD453 and HD454, the narrowed thumb shelf is similarly sculpted for enhanced comfort.

Specifications:

  • CNC machined from bar stock alloy carbon steel
  • Heat treated to GI specifications

Upgrade your 1911 with the Harrison Design Extreme Service Thumb Safety and experience the difference in comfort and reliability!



Top takeaways

  1. The Harrison Design Extreme Service Thumb Safety is designed for ergonomic comfort and extended use, with a thumb shelf that matches the human hand and ensures solid grip safety contact.
  2. It features a thicker plate for durability, a pivot shaft with a generous radius to prevent stress breakage, and a unique blocking lug for adjustable safety swing.
  3. The safety is CNC machined from bar stock alloy carbon steel, heat treated to GI specs, and has a blued finish, compatible with 1911 Government, Commander, and Officers models.

Attributes

  • Finish: 
    Blued
  • Model: 
    Commander
    , 
    Government
    , 
    Officers
  • Style: 
    Thumb
  • Weapon type: 
    1911
  • Delivery weight: 0.113kg
  • Shipping height: 10mm
  • Shipping width: 76mm
  • Shipping length: 152mm

Item details

Made in USA
US export classification: 0A501.x

Customers reviews

Customer ratings (6)

5 / 5
Definitely recommended

Brownells USA Harrison Parts are phenomenal 21/05/2016

If you know how to properly fit a thumb safety then buy this. If you do not know how to do it safely, buy it and have a gun smith install it. Matched my blackened Colt Rail Gun finish perfectly. No rattle, perfect function after removing material. I expected to have to fit the safety and it was easy. Very very solid.Clicks definitively on and off. Will be ordering other Harrison products shortly.

Definitely recommended

Brownells USA Good design & ergonomics. 10/05/2015

Installed on a 2010 Dan Wesson CCO. Required a good bit of fitting on the sear engagement face, but that's normal and expected for 1911 fire control parts. Results were great -- I really like the ergonomics, and the detent tension is perfect.



I really like the design. Had similar excellent results with the stainless version on a Colt 1070 XSE.

Variations:

-9 %
The 1911 Extreme Service Thumb Safety offers ergonomic comfort, rugged construction, and unique features for reliable performance during extended use.
1911 EXTREME SERVICE THUMB SAFETY - 1911 EXTREME SERVICE THUMB SAFETY BLUED
104.9 GBP 2 £104.90 * £114.90
In stock
Finish: Blued Make: 1911 Model: Government, Commander, Officers Style: Thumb Product no.: 100013877
In stock
104.9 GBP 2 £104.90 * £114.90
-10 %
The 1911 Extreme Service Thumb Safety features ergonomic design, robust construction, and precise fit, enhancing comfort and reliability during extended use.
1911 EXTREME SERVICE THUMB SAFETY - 1911 EXTREME SERVICE THUMB SAFETY STAINLESS STEEL
94.9 GBP 4 £94.90 * £104.90
In stock
Finish: Stainless Steel Make: 1911 Model: Government, Commander, Officers Style: Thumb Product no.: 100013878
In stock
94.9 GBP 4 £94.90 * £104.90
-8 %
The 1911 Extreme Service Thumb Safety offers ergonomic comfort, rugged construction, and a unique design for reliable performance in extended firing sessions.
1911 EXTREME SERVICE THUMB SAFETY - TAC BLACK EXTENDED THUMB SAFETY
109.9 GBP 1 £109.90 * £119.90
In stock
Finish: Black Make: 1911 Model: Government, Commander, Officers Style: Thumb Product no.: 100015459
In stock
109.9 GBP 1 £109.90 * £119.90
The Harrison Design Extreme Service Thumb Safety offers ergonomic comfort, rugged construction, and unique features for reliability during extended use.
1911 EXTREME SERVICE THUMB SAFETY - TAC SS EXTENDED THUMB SAFETY
Not available
Finish: Stainless Steel Make: 1911 Model: Government, Commander, Officers Style: Thumb Product no.: 100015449
Not available
104.9 GBP 0 £104.90 *

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