TMC 1911 Barrel Link #4.5 – Precision Half-Size Upgrade

TMC 1911 Barrel Link – #4.5 (.2855″)

Achieve precise 1911 barrel timing with the TMC #4.5 Barrel Link. When a #4 link runs too short and a #5 link runs too long, this half‑size option fills the gap perfectly. As a result, it restores correct geometry and promotes smooth, consistent operation throughout the firing cycle.

Because proper linkage directly affects barrel timing, this precision link helps maintain correct hammer and sear engagement. Consequently, your pistol cycles more smoothly and delivers reliable performance shot after shot.

Precision Manufacturing You Can Trust

TMC machines each barrel link with careful attention to detail. First, the link is spot‑drilled, then reamed and chamfered for smooth pin fit and reduced wear. Finally, TMC engraves the exact size on the part, which makes identification fast and eliminates guesswork during assembly.

In addition, TMC machines this link from heat‑treated 4140 chromoly steel and applies a durable blued finish. Because of this combination, the link resists wear, maintains strength, and performs reliably over long round counts.

Key Features and Benefits

This #4.5 half‑size barrel link fine‑tunes 1911 fire‑control geometry when standard sizes fall short.
It uses heat‑treated 4140 chromoly steel for strength and longevity.
Careful machining, reaming, and chamfering ensure smooth, consistent operation.
The blued finish adds corrosion resistance and long‑term durability.
Engraved sizing allows quick and accurate identification during fitting.
Correct linkage improves hammer and sear engagement for dependable function.

Compatibility

This barrel link fits standard 1911 pistols and works well in both custom and competition builds. Furthermore, it pairs easily with most factory and aftermarket hammers and triggers.

Why Upgrade Your Barrel Link?

Over time, improper link length can disrupt barrel timing and reduce performance. By installing the correct half‑size link, you restore smooth unlocking and locking. As a result, barrel‑to‑slide lockup improves and accuracy becomes more consistent.

Additionally, proper timing reduces feeding issues, minimizes binding during cycling, and lowers stress on barrel lugs and the frame. Because of this, critical locking surfaces last longer, and the pistol runs more reliably—especially in high‑round‑count or competition use.

Summary

The TMC 1911 Barrel Link #4.5 provides precise geometry where standard links cannot. With durable heat‑treated steel, accurate machining, and engraved sizing, it delivers smooth cycling, reliable engagement, and long‑term performance.

Although small, this component plays a critical role in how your 1911 functions. When every detail matters, the TMC #4.5 Barrel Link helps your pistol perform at its best.