1911 Short Block – Officer – Classic – 45ACP

1911 Short Block – Officer – Classic – .45 ACP

A Proven Starting Point for Compact Custom Builds

First and foremost, the 1911 Short Block – Officer – Classic – .45 ACP gives builders and gunsmiths a fast, reliable foundation for a compact, traditional 1911. Moreover, whether you are a do‑it‑yourself shooter or a professional gunsmith, this kit significantly reduces build time while minimizing fitting work. As a result, you achieve consistent performance right from the start without sacrificing customization.

Additionally, each 1911 Short Block includes a matched slide, frame, and barrel, all carefully fitted using the same standards and methods as full custom builds. Consequently, you gain precision, repeatability, and reliability while keeping your project efficient and flexible.

A Classic Foundation for Custom Builds

Save Time While Maintaining Full Control

To begin with, this Classic 1911 Short Block provides a properly fitted core, which allows you to focus on finishing details, tuning, and personal upgrades. Because the major components already work together correctly, you avoid common fitment issues. Therefore, you save hours of bench time and move your project forward faster and more smoothly.

Furthermore, by starting with a professionally fitted short block, you reduce risk while improving consistency throughout the entire build.

Precision Frame – Oriskany Arms

Strength, Fit, and Traditional Styling

Equally important, the Oriskany Arms Officer frame blends classic 1911 lines with modern manufacturing standards. As a result, it delivers both durability and accuracy in a compact package.

Key frame features include:

• Precision cast from 4140 carbon steel

• CNC machined to final dimensions

• Heat treated to Rc 22–24 for long‑term durability

• Oversize frame rails for a tight slide‑to‑frame fit

• Clean, classic styling for traditional builds

Because of this construction, the frame provides a strong and stable foundation that manages recoil confidently while promoting smooth, controlled shooting.

Classic Slide – Strength and Control

Smooth Cycling with Traditional Details

Likewise, the TMC Classic 1911 slide is crafted from 4140 bar‑stock carbon steel and precision CNC machined for superior strength. Consequently, it offers excellent resistance to wear and fatigue, even under extended use.

Slide features include:

• Traditional front and rear serrations for positive grip

• Standard dovetail sight cuts

• Rear dovetail: .495 x 65°

• Front dovetail: .330 x 65°

Because of this design and precise machining, the slide cycles smoothly and consistently. Therefore, your compact 1911 maintains reliable operation while preserving a timeless appearance.

Match‑Grade Barrel and Bushing

Accuracy Built into the Core

In addition, each Short Block includes a TMC match‑grade stainless steel barrel, CNC machined in the USA for accuracy and durability. Because the barrel is slightly oversized, it allows for a tighter, more consistent lockup.

Barrel features include:

• Heat treated and cryo stress‑relieved

• Precision broach‑cut rifling

• Compatible with all .45 ACP bullet types

Furthermore, the kit includes a hand‑fitted barrel bushing, which enhances lockup strength and repeatable performance shot after shot.

Precision Fit Where It Counts

Reduced Assembly Time, Improved Performance

Just as important, critical fitment areas receive close attention:

• Slide‑to‑frame fit: Tight tolerances for smooth cycling and improved accuracy

• Barrel fit: Hand‑fitted bushing ensures solid lockup and reliable operation

Additionally, the Short Block includes the recoil system and slide stop, which further reduces assembly time and simplifies the build process.

Parts Required to Complete the Build

Finish Your Officer‑Size 1911

To complete your Officer Classic Short Block, you will still need:

• Plunger tube

• Mainspring housing and magazine release

• Hammer, sear, sear spring, and disconnector

• Trigger

• Thumb safety and grip safety

• Firing pin, firing pin spring, and firing pin stop

• Extractor and ejector

• Complete 1911 pin kit

Therefore, while the most demanding fitting work is already complete, you retain full control over final components and tuning.

Why Choose a TMC Classic Short Block?

Custom‑Level Fit Without the Time Sink

Ultimately, because this Short Block follows the same precise fitting standards as full custom builds, it delivers accuracy, smooth operation, and long‑term reliability. As a result, it removes the most time‑consuming portion of a .45 ACP 1911 build while still allowing complete freedom for personalization.

In short, the 1911 Short Block – Officer – Classic – .45 ACP is the ideal foundation for builders who want custom‑level results with greater efficiency and confidence.

⚠️ FIREARM WARNING

1911 frames are serialized firearm components regulated by the BATFE:

• Must ship to a Federal Firearms License (FFL) holder

• All BATFE, GCA, and NFA rules apply

• You are responsible for confirming legality in your state

• Ensure your chosen FFL will accept and transfer the firearm

Thunder Mountain Custom, LLC is not responsible for shipping or administrative fees if an FFL refuses delivery.