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Home Handgun Parts Trigger Group Parts Performance Enhancing Kits HARRISON DESIGN & CONSULTING 1911 AUTO HD-120 EXTREME SERVICE IGNITION COMPONENTS Support
Sierra Sale!
Upgrade your 1911 with the HD-120 Extreme Service Ignition Components for precision and reliability. 🔧 Enhance your shooting experience today!

HARRISON DESIGN & CONSULTING 1911 AUTO HD-120 EXTREME SERVICE IGNITION COMPONENTS - HARRISON DESIGN & CONSULTING EXTREME SERVICE SEAR

100004782

Variations:

Upgrade your 1911 with the HD-120 Extreme Service Ignition Components for precision and reliability. 🔧 Enhance your shooting experience today!
HARRISON DESIGN & CONSULTING EXTREME SERVICE SEAR
59.9 GBP 9 £59.90 *
Product no.: 100004782
In stock
59.9 GBP 9 £59.90 *
Ask question
Upgrade your 1911 with the HD-120 Extreme Service Ignition Set 🔧. Precision machined for reliability and performance in demanding conditions.
HARRISON DESIGN & CONSULTING HD-120 IGNITION SET
209.9 GBP 12 £209.90 *
Product no.: 100004374
In stock
209.9 GBP 12 £209.90 *
Ask question
Upgrade your 1911 with the HD-120 Extreme Service Disconnector 🔧 for enhanced performance. Durable, precision-engineered by Harrison Design.
HARRISON DESIGN & CONSULTING EXTREME SERVICE DISCONNECTOR
44.9 GBP 10 £44.90 *
Product no.: 100004783
In stock
44.9 GBP 10 £44.90 *
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Upgrade your 1911 with the HD-120 Extreme Service Ignition Set 🔧. Precision-engineered for reliability and performance. Perfect fit and finish!
HARRISON DESIGN & CONSULTING HD-120B IGNITION SET
214.9 GBP 0 £214.90 *
Product no.: 100011124
Backorderable
214.9 GBP 0 £214.90 *
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Upgrade your 1911 with the Extreme Service Hammer 🔧 from Harrison Design. Crafted from hardened tool steel for superior performance!
HARRISON DESIGN & CONSULTING EXTREME SERVICE HAMMER
99.9 GBP 1 £99.90 *
Product no.: 100004781
In stock
99.9 GBP 1 £99.90 *
Ask question
44.9 214.9 5 GBP
59.9 GBP £59.90

Prices inclusive of duty & VAT.

Product no.: 100004782

Mfr. No.: HD-122

Critical ignition parts are machined from high-grade tool steel for precise fit and reliable, consistent function under the most demanding operating conditions. Each component is wire-EDM cut, CNC machined and honed to final dimensions with +/-.005" tolerances for drop-in fit on many 1911s, then heat-treated to Rc 53-56 to maintain those dimensions through thousands of firing cycles. Hammer hooks are pre-prepped and sear nose polished for precise contact and crisp, clean letoff. Commander-style hammer has elongated spur with deep serrations to provide extra-secure thumb purchase. Beveled edges resist snagging on clothing and protect the thumb from abrasion, and slightly narrower hammer body prevents unwanted slide contact. HD-120 set includes hammer, sear, and disconnector. Each component also available separately. HD-120B set features a black IonBond DLC coating on the hammer, for those who prefer the traditional “blued” look combined with wear- and corrosion-resistance similar to hard-chrome.
In stock
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Wish List Ask question

Variations:

Upgrade your 1911 with the HD-120 Extreme Service Ignition Components for precision and reliability. 🔧 Enhance your shooting experience today!
HARRISON DESIGN & CONSULTING EXTREME SERVICE SEAR
59.9 GBP 9 £59.90 *
Product no.: 100004782
In stock
59.9 GBP 9 £59.90 *
Ask question
Upgrade your 1911 with the HD-120 Extreme Service Ignition Set 🔧. Precision machined for reliability and performance in demanding conditions.
HARRISON DESIGN & CONSULTING HD-120 IGNITION SET
209.9 GBP 12 £209.90 *
Product no.: 100004374
In stock
209.9 GBP 12 £209.90 *
Ask question
Upgrade your 1911 with the HD-120 Extreme Service Disconnector 🔧 for enhanced performance. Durable, precision-engineered by Harrison Design.
HARRISON DESIGN & CONSULTING EXTREME SERVICE DISCONNECTOR
44.9 GBP 10 £44.90 *
Product no.: 100004783
In stock
44.9 GBP 10 £44.90 *
Ask question
Upgrade your 1911 with the HD-120 Extreme Service Ignition Set 🔧. Precision-engineered for reliability and performance. Perfect fit and finish!
HARRISON DESIGN & CONSULTING HD-120B IGNITION SET
214.9 GBP 0 £214.90 *
Product no.: 100011124
Backorderable
214.9 GBP 0 £214.90 *
Ask question
Upgrade your 1911 with the Extreme Service Hammer 🔧 from Harrison Design. Crafted from hardened tool steel for superior performance!
HARRISON DESIGN & CONSULTING EXTREME SERVICE HAMMER
99.9 GBP 1 £99.90 *
Product no.: 100004781
In stock
99.9 GBP 1 £99.90 *
Ask question

Description:

Hardened Tool Steel Components For Durability, Reliability & Precise Fit
Critical ignition parts are machined from high-grade tool steel for precise fit and reliable, consistent function under the most demanding operating conditions. Each component is wire-EDM cut, CNC machined and honed to final dimensions with +/-.005" tolerances for drop-in fit on many 1911s, then heat-treated to Rc 53-56 to maintain those dimensions through thousands of firing cycles. Hammer hooks are pre-prepped and sear nose polished for precise contact and crisp, clean letoff. Commander-style hammer has elongated spur with deep serrations to provide extra-secure thumb purchase. Beveled edges resist snagging on clothing and protect the thumb from abrasion, and slightly narrower hammer body prevents unwanted slide contact. HD-120 set includes hammer, sear, and disconnector. Each component also available separately. HD-120B set features a black IonBond DLC coating on the hammer, for those who prefer the traditional “blued” look combined with wear- and corrosion-resistance similar to hard-chrome. 

SPECS: Hardened tool steel, in-the-white. Hardened to Rc 53-56.  HD-120B set’s sear has a black IonBond DLC finish. Some fitting may be required.

Top takeaways

  1. The ignition components are precision-machined from high-grade tool steel and heat-treated for durability, ensuring reliable function and a consistent fit within +/-.005" tolerances.
  2. Each part is designed for a drop-in fit for many 1911 models, with pre-prepped hammer hooks and a polished sear nose for a crisp trigger letoff, and the HD-120 set includes a hammer, sear, and disconnector.
  3. The HD-120B set offers a black IonBond DLC coated hammer for a traditional look with enhanced wear and corrosion resistance, and some fitting may be required for installation.

Attributes

  • Model: Commander,Government,Officers
  • Weapon type: 1911
  • Delivery weight: 0.045kg
  • Shipping height: 8mm
  • Shipping width: 83mm
  • Shipping length: 146mm

Item details

Made in USA
US export classification: 0A501.c

Customers reviews

Customer ratings (15)

4.9 / 5
Recommended

Brownells USA makes a fair drop in 28/01/2018

good looking part but not made for any of the colts I tried to fit the head is to lose in the port at the pistol I could feel it moving when pulling on the trigger my shooters complained of this and I had to go with EGW I'd rather take of to fit correctly than have a less then drop in part.

Definitely recommended

Brownells USA Almost too pretty to install 25/03/2017

Some of the nicest machined parts I've ever seen. Did require fitting of thumb safety as expected. Trigger pull is now one of the best I've ever felt.



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