Thunder Mountain Custom Standard 1911 Sear Spring – 3 Pack

The Thunder Mountain Custom (TMC) Standard 1911 Sear Spring 3‑Pack gives you three high‑quality replacement springs built to original factory dimensions. Each spring features the classic 3‑finger design, which controls the sear, the trigger return, and the grip safety. Because these springs are made from strong, American‑made spring steel, they deliver reliable tension, smooth movement, and long service life. As a result, they are an essential upgrade for tune‑ups, repairs, and fresh builds.

Reliable Factory‑Spec Performance

These TMC sear springs follow traditional 1911 specifications, so they fit and function just like original parts. This means you can restore proper trigger and safety operation with confidence. Moreover, since each spring maintains consistent pressure, your trigger pull stays smooth and predictable. Whether you are fixing an older pistol or refreshing a competition setup, these springs help your 1911 perform the way it should.

Durable Construction for Long‑Lasting Use

TMC builds each spring from high‑quality spring steel. Therefore, the springs resist fatigue and keep their shape through thousands of cycles. Additionally, the precise bends and polished contact points help reduce friction. As a result, you get cleaner movement, a more consistent trigger feel, and improved overall performance.

Great for Tune‑Ups and Custom Builds

Because sear springs affect several key functions—trigger return, sear engagement, and grip safety tension—they are vital for every 1911. A weak or worn spring can cause light trigger reset, unreliable sear engagement, or safety failures. However, replacing it with a TMC sear spring ensures proper operation and helps keep your pistol safe and dependable. Furthermore, having three springs in each pack lets you upgrade multiple pistols or keep spares on hand for future maintenance.

Key Features

• Standard‑weight 1911 sear springs

• Original 3‑finger design for proper function

• Controls sear, trigger return, and grip safety

• Made from high‑quality American spring steel

• Helps maintain a clean, consistent trigger pull

• Ideal for tune‑ups, repairs, and new builds

• Gunsmithing required for installation

• Made in the USA

This 3‑pack is a simple and effective way to keep your 1911 running smoothly. With dependable factory‑spec tension and long‑lasting durability, the TMC Standard Sear Spring is an excellent choice for any 1911 owner or gunsmith.