1911 Short Block – Officer – Tactical – 45ACP

Government 1911 Short Block – 9mm Tactical Build Foundation

First and foremost, the Government 1911 Short Block gives shooters and custom gunsmiths an immediate advantage when starting a serious build. Instead of beginning with raw components, this 1911 Short Block arrives with the slide, frame, and barrel already precision fit. As a result, builders save valuable time while also reducing overall project cost.

Moreover, we assemble every 1911 Short Block using the same standards applied to our full custom pistols. Because we follow proven fitting methods, each short block delivers reliability, accuracy, and durability from the very beginning. Consequently, this 1911 Short Block works equally well for DIY builders, competitive shooters, and professional gunsmiths.

Full-Custom Standards Built Into Every 1911 Short Block

Unlike basic parts kits, our 1911 Short Block uses true full-build assembly techniques. Therefore, builders receive genuine gunsmith-level fitment without paying for unnecessary labor. At the same time, the modular design of the 1911 Short Block allows complete control during final assembly.

Additionally, we carefully select every component within the 1911 Short Block for performance and compatibility. As a result, the foundation remains consistent, predictable, and easy to finish. Ultimately, this approach eliminates guesswork and speeds up completion.

Precision Frame at the Core of the 1911 Short Block

Oriskany Arms Government 1911 Frame

At the heart of every 1911 Short Block, the Oriskany Arms Government frame provides strength, value, and consistency. Notably, this frame includes features typically found on frames costing two to three times more. First, Oriskany Arms precision casts the frame from 4140 carbon steel. Next, CNC machining brings it to exact final dimensions. Then, controlled heat treatment to Rc 22–24 ensures long-term durability.

Because we machine the frame rails oversized, the gunsmith achieves an exceptionally tight slide-to-frame fit. Consequently, mechanical consistency improves and accuracy increases. Furthermore, 20-line-per-inch front-strap checkering enhances grip control during recoil. Ultimately, this frame gives the 1911 Short Block a rugged and reliable foundation.

Elite Slide Construction for the 1911 Short Block

TMC Elite Tactical 1911 Slide

To complete the upper half of the 1911 Short Block, we pair the frame with a TMC Elite slide. Specifically, we CNC machine the slide from 4140 bar-stock carbon steel and then heat treat it for durability. Because this alloy offers excellent fatigue strength and impact resistance, the slide performs reliably under hard use.

In addition, front and rear cocking serrations provide a positive grip when manipulating the slide. As a result, racking remains secure in all conditions. Furthermore, standard dovetail cuts allow easy installation of a wide range of sights.

Standard Sight Cuts for the 1911 Short Block

• Rear dovetail: .495″ × 65°

• Front dovetail: .330″ × 65°

Because these cuts follow industry standards, sight selection and installation remain simple and flexible.

Match-Grade Barrel System in the 1911 Short Block

Full-Support 9mm Stainless Barrel

The 9mm Tactical 1911 Short Block includes a match-grade stainless steel barrel with a full-support ramped design. Consequently, the barrel enhances feeding reliability and strengthens chamber support.

First, we CNC machine each barrel in the USA from premium stainless steel bar stock. Next, we heat treat and cryo stress-relieve the barrel to minimize internal stress. Therefore, barrel life increases and accuracy remains consistent. Finally, precision broach-cut rifling delivers excellent performance with all bullet types, including lead.

Because the barrel features slightly oversized dimensions, lockup remains strong. As a result, the 1911 Short Block maintains repeatable accuracy over high round counts.

Precision Fitment Throughout the 1911 Short Block

Slide-to-Frame Fit in the 1911 Short Block

We hold extremely tight tolerances on every 1911 Short Block slide-to-frame fit. Therefore, lateral movement stays minimal during cycling. As a direct result, shot-to-shot consistency improves noticeably.

Barrel Fit and Lockup in the 1911 Short Block

Likewise, we hand fit the barrel bushing and carefully establish lockup in every 1911 Short Block. Consequently, the barrel returns to the same position during each cycle. In turn, this repeatability enhances both accuracy and reliability.

Components Included With the 1911 Short Block

To further streamline the build, each 1911 Short Block includes:

• Recoil system

• Slide stop

Because we already select and fit these components, builders avoid delays and unnecessary troubleshooting.

Components Required to Complete the 1911 Short Block

To finish the pistol, builders must install the following components:

• 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

• Ejector and extractor

• 1911 pin kit

Because the core elements of the 1911 Short Block already fit correctly, these remaining parts allow precise customization of trigger feel, controls, and ergonomics.

Why the 1911 Short Block Is the Ideal Starting Point

In summary, the Government 9mm Tactical 1911 Short Block provides a professional-grade foundation without wasted effort or unnecessary cost. By combining premium materials, precision machining, and proven fitting methods, it delivers accuracy and reliability from the first stage of the build.

Ultimately, the 1911 Short Block gives builders the freedom to finish the pistol their way—while starting from a platform that is already built right.

⚠️ FIREARM WARNING

1911 frames are serialized firearm components regulated by the BATFE.

• This item 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

• You must 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