Extreme Engineering Marine Corps Spur Ignition Kit
5‑Piece 1911 / 2011 Fire‑Control System with Traditional Spur Styling
Built Specifically for the Marine Corps Shooting Team
The Extreme Engineering Marine Corps Spur Ignition Kit blends classic spur‑hammer styling with modern, match‑grade fire‑control performance. From the outset, this kit preserves the traditional Marine Corps aesthetic. At the same time, it delivers the speed, durability, and consistency demanded by competitive shooters.
Moreover, Extreme Engineering machines every component from aerospace‑grade steel. As a result, the system achieves fast lock time, exceptional wear resistance, and long‑term geometry stability. Consequently, this ignition kit upgrades both 1911 and 2011 pistols without sacrificing the timeless spur‑hammer appearance.
Designed for Performance, Not Just Appearance
Many factory ignition systems prioritize looks first. However, Extreme Engineering takes a different approach. Instead, the Marine Corps Spur kit focuses on speed, strength, and repeatable performance. Therefore, the trigger pull remains clean, predictable, and stable even after thousands of rounds of hard use.
Because every component works together as a matched system, shooters experience consistent engagement, reliable reset, and confidence‑inspiring trigger feel from the first shot to the last.
Why the Marine Corps Spur Ignition Kit Outperforms Factory Parts
Superior Materials and Proven Geometry
Most factory ignition components rely on basic carbon steel combined with shallow surface heat treatment. Consequently, wear accelerates, engagement surfaces degrade, and geometry slowly disappears. Over time, shooters often notice inconsistent trigger pulls, gritty breaks, slower lock time, and pull‑weight drift.
In contrast, Extreme Engineering manufactures this kit from a premium aerospace alloy originally developed for rocket booster engine applications. Because of this advanced material choice, the ignition system delivers superior impact resistance, outstanding wear properties, and long‑term geometry retention.
Furthermore, by heat treating the hammer to 50–54 Rockwell C, Extreme Engineering achieves an ideal balance of surface hardness and core strength. As a result, service life increases dramatically while engagement surfaces remain stable.
Marine Corps Spur Design with Modern Lock‑Time Speed
Ready‑Out‑of‑the‑Box Performance
This ignition kit delivers the smooth, rolling trigger break preferred by Bullseye shooters. Additionally, it produces a clean 4‑lb trigger pull straight out of the box. With only minor sear spring adjustment, shooters can easily achieve a consistent 3‑lb competition pull.
Because geometry remains stable, pull weight does not drift over time. Meanwhile, the low‑mass hammer design supports ultra‑fast lock time and precise shot execution. Therefore, shooters gain both traditional feel and modern performance in one system.
Just as importantly, Extreme Engineering manufactures every component in the USA and backs the kit with a lifetime warranty against breakage. Compared to imported ignition kits with inconsistent steel and heat treatment, this system delivers significantly higher durability and long‑term consistency.
The Thunder Mountain Custom Advantage
Exclusive Components That Elevate Performance
Only Thunder Mountain Custom includes a precision‑tuned Standard Sear Spring with this ignition kit. As a result, shooters benefit from a cleaner break, lighter pull potential, improved consistency, and greater long‑term reliability.
Because standard ignition kits do not include this upgraded spring, this package offers a genuine performance advantage right out of the box.
What’s Included
Marine Corps Spur 5‑Piece Ignition Kit
Marine Corps Spur Chamfered Ultra‑Light Hammer
First, the hammer delivers speed without sacrificing strength.
Weighs only 0.7 oz
Produces one of the fastest lock times available
Heat treated to 50–54 Rockwell C
Ultra‑low mass improves trigger response and split times
Fits Colt, Kimber, Springfield, STI, SV, and Para pistols
Tactical Precision Sear
Next, the sear ensures stable engagement and long‑term consistency.
Machined from the same aerospace alloy as Extreme Engineering premium hammers
Heat treated to 44–46 Rockwell C
Maintains light trigger pull stability
Helps prevent follow‑down
Retains geometry under heavy use
Proven in competition pistols nationwide
National Match Disconnector
Then, the disconnector improves timing and reset performance.
Lightweight design enhances reset consistency
Improves high‑speed cycling reliability
Supports faster, cleaner double‑tap performance
Optimized for competition and endurance use
Thunder Mountain Custom Standard Sear Spring
Additionally, the included sear spring refines overall trigger feel.
Tuned for a crisp, clean break
Maintains stable light pull weights
Produces a smooth, consistent trigger feel
Outperforms standard factory sear springs
Wolff Precision Mainspring
Finally, the kit includes a Wolff mainspring so shooters can fine‑tune performance.
Available in 15 lb, 17 lb, or 19 lb options
Allows precise balance between trigger feel and ignition reliability
Delivers industry‑standard consistency and long service life
Compatibility
Fits Most 1911 and 2011 Platforms
This ignition kit fits a wide range of pistols, including Springfield, Colt, Kimber, STI, SV, Para, Springfield Prodigy, and custom 1911 or 2011 builds.
Important Fitment Notes
Professional Fitting Recommended
Some pistols may require thumb safety fitting. Additionally, certain builds may need a new thumb safety to ensure proper sear engagement. Therefore, a qualified pistolsmith should perform any minor fitting required to achieve optimal performance.
Built for the Serious Bullseye Shooter
Tradition Meets Match‑Grade Precision
If you are building or tuning a match‑ready pistol, the Extreme Engineering Marine Corps Spur Ignition Kit delivers faster lock time, cleaner breaks, lighter and more stable pull weights, and superior wear resistance.
Ultimately, thanks to aerospace‑grade materials, precision machining, a lifetime warranty, and the exclusive Thunder Mountain Custom sear spring, this ignition kit provides elite‑level fire‑control performance that stands up to hard, competitive use while preserving classic Marine Corps styling.
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