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

100004783
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.

44.9 214.9 5 GBP
Product no.: 100004783
HARRISON DESIGN & CONSULTING EXTREME SERVICE DISCONNECTOR
Mfr Part: HD-123 Extreme Service Disconnector
44.9 GBP 2 £44.90 *
Delivery time approx. 7-14 days.
2 pcs. in the USA warehouse
Specs: Make: 1911 Model: Government, Commander, Officers

Description

Extreme Service Disconnector

Attributes

Make: 1911 Model: Commander,Government,Officers Delivery weight: 0.045kg Shipping height: 3mm Shipping width: 57mm Shipping length: 89mm

Item details

Made in USA
US export classification: 0A501.c



Product no.: 100004374
HARRISON DESIGN & CONSULTING HD-120 IGNITION SET
Mfr Part: HD-120 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.
209.9 GBP 10 £209.90 *
Delivery time approx. 7-14 days.
More than 10 pieces in USA warehouse
Specs:

Top takeaways

  1. The 1911 Auto HD-120 Extreme Service Ignition Components are precision-machined from high-grade tool steel for durability and consistent performance.
  2. Components include a hammer, sear, and disconnector that are wire-EDM cut, CNC machined, and honed with tight tolerances for a drop-in fit on many 1911s.
  3. The HD-120 set offers a commander-style hammer with an elongated spur and deep serrations, and the HD-120B set features a black IonBond DLC coating for a traditional look with enhanced wear resistance.

Attributes

Delivery weight: 0.005kg Shipping height: 10mm Shipping width: 76mm Shipping length: 147mm

Item details

Made in USA
US export classification: 0A501.c

Product no.: 100004782
HARRISON DESIGN & CONSULTING EXTREME SERVICE SEAR
Mfr Part: 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.
59.9 GBP 3 £59.90 *
Delivery time approx. 7-14 days.
3 pcs. in the USA warehouse
Specs: Make: 1911 Model: Government, Commander, Officers

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

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

Item details

Made in USA
US export classification: 0A501.c


Product no.: 100004781
HARRISON DESIGN & CONSULTING EXTREME SERVICE HAMMER
Mfr Part: HD-121 Extreme Service Hammer
134.9 GBP 2 £134.90 *
Delivery time approx. 7-14 days.
2 pcs. in the USA warehouse
Specs: Finish: Unfinished Make: 1911 Model: Government, Commander, Officers

Description

Extreme Service Hammer

Attributes

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

Item details

Made in USA
US export classification: 0A501.c

Product no.: 100011124
HARRISON DESIGN & CONSULTING HD-120B IGNITION SET
Mfr Part: HD-120-B 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.
214.9 GBP 6 £214.90 *
Delivery time approx. 7-14 days.
6 pcs. in the USA warehouse
Specs:

Top takeaways

  1. The HD-120 Extreme Service Ignition Components are precision machined from high-grade tool steel for reliable performance and fit in most 1911s.
  2. Components are wire-EDM cut, CNC machined, honed to +/-.005" tolerances, heat-treated, and feature pre-prepped hammer hooks and polished sear noses for a crisp letoff.
  3. The HD-120B set includes a black IonBond DLC coated hammer for a traditional look with enhanced wear and corrosion resistance.

Attributes

Shipping height: 5mm Shipping width: 81mm Shipping length: 152mm

Item details

Made in USA
US export classification: 0A501.c

Upgrade your 1911 with the HD-120 Extreme Service Disconnector 🔧 for enhanced performance. Durable, precision-engineered by Harrison Design.

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.

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