Pachmayr Combat Special Inspired Tisas 1911

Published on January 10, 2026
Duration: 1:27

This guide details the process of customizing a Tisas Tank Commander 1911 to emulate the iconic Pachmayr Combat Special. Key modifications include fitting a ported 5-inch barrel to a 4.25-inch slide, installing BoMar-style rear and Novak-style front sights, and adding a flat backstrap, pinned grip safety, and authentic Pachmayr grips. The resulting firearm is noted as a fantastic shooter with excellent recoil management.

Quick Summary

This custom Tisas 1911 build emulates the Pachmayr Combat Special by using a Tisas Tank Commander as the base. Modifications include a ported 5-inch barrel extending from a 4.25-inch slide, BoMar-style rear and Novak-style front sights, a flat backstrap, pinned grip safety, and authentic Pachmayr grips.

Chapters

  1. 00:00Introduction: Custom Pachmayr 1911 Build
  2. 00:16Barrel & Sight Modifications
  3. 00:35Grip & Safety Features
  4. 00:54Range Demonstration

Frequently Asked Questions

What base firearm is used for this Pachmayr Combat Special inspired 1911 build?

The custom build starts with a Tisas Tank Commander, a 1911 model featuring a standard GI-length grip and a compact 4.25-inch slide, serving as the foundation for the modifications.

How is the barrel modified for the Pachmayr Combat Special look?

A factory 5-inch 1911 barrel is used and cut with compensating ports. It is designed to extend beyond the 4.25-inch slide, contributing to the distinctive profile of the Combat Special.

What sight upgrades are recommended for this custom 1911 build?

The build incorporates a BoMar-style adjustable rear sight, which requires a slide cut, and a Novak-style front sight to complete the classic custom 1911 sight configuration.

What specific Pachmayr elements are added to the Tisas 1911?

Authentic Pachmayr grips are installed, and the firearm receives a flat backstrap and a pinned grip safety to fully replicate the aesthetic and functional characteristics of the original Pachmayr Combat Special.

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