1911 Short Block – Government – 45ACP – Tactical

1911 Short Block – Government – .45 ACP – Tactical

First and foremost, the Government .45 ACP 1911 Short Block gives serious builders and professional gunsmiths a decisive head start. Instead of assembling a pistol from loose components, this 1911 Short Block arrives with the slide, frame, and barrel already precision fit. As a result, you eliminate hours of labor while also reducing overall build cost—yet you still retain full control over the final configuration.

Moreover, we build every 1911 Short Block using the same materials, methods, and tolerances found in our full custom pistols. Because of this, the platform delivers reliability, accuracy, and durability from the very beginning. Consequently, this Government Tactical 1911 Short Block serves as an ideal foundation for duty pistols, defensive builds, and hard‑use .45 ACP projects.

Features of the Government .45 ACP 1911 Short Block

Oriskany Arms Government Frame – 1911 Short Block

At the core of the 1911 Short Block, the Oriskany Arms Government frame provides strength, stability, and long-term service life. First, Oriskany Arms precision casts each frame from 4140 carbon steel. Next, CNC machining brings the frame to exact final dimensions. Then, controlled heat treatment to Rc 22–24 ensures the proper balance of toughness and wear resistance.

Because the frame rails are intentionally oversized, the gunsmith can achieve an exceptionally tight slide‑to‑frame fit. As a result, mechanical consistency improves and accuracy increases. Additionally, 20‑line‑per‑inch front‑strap checkering enhances grip security during recoil. Ultimately, this frame gives the 1911 Short Block a rugged tactical foundation.

Oriskany Arms Elite Government Slide – 1911 Short Block

To complete the upper assembly, the 1911 Short Block uses an Oriskany Arms Elite Government 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 strength and fatigue resistance, the slide performs reliably under sustained fire.

Furthermore, front and rear cocking serrations provide a positive grip when manipulating the slide. As a result, press checks and racking remain controlled even under adverse conditions. In addition, standard dovetail sight cuts allow easy installation of duty, suppressor‑height, or night sights.

Sight Cut Specifications – 1911 Short Block

• Rear dovetail: .495 x 65°

• Front dovetail: .330 x 65°

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

Match‑Grade Stainless Tactical Barrel – 1911 Short Block

Oriskany Arms match‑grade barrels are CNC machined in the USA from premium stainless steel bar stock. This Government .45 ACP 1911 Short Block features a tactical, full‑support barrel configuration designed for dependable feeding and consistent lockup.

Barrel dimensions are slightly oversized to allow precise fitting. After machining, we heat treat and cryo stress relieve each barrel. Therefore, internal stresses are reduced and barrel life increases. Finally, precision broach‑cut rifling delivers excellent accuracy with all bullet types, including lead.

Precision Fitment in the 1911 Short Block

Slide‑to‑Frame Fit – 1911 Short Block

We hold extremely tight tolerances on every 1911 Short Block slide‑to‑frame fit. Consequently, lateral movement remains minimal during cycling. As a direct result, shot‑to‑shot consistency improves and recoil feels more predictable.

Barrel Fit and Lockup – 1911 Short Block

Likewise, each 1911 Short Block includes a hand‑fitted barrel bushing and carefully established lockup. As a result, the barrel returns to the same position every cycle, improving both accuracy and long‑term reliability.

Included Components with the 1911 Short Block

To streamline your build, the Government Tactical 1911 Short Block includes:

• Recoil system

• Slide stop

Because these components are already selected and fit, final assembly progresses faster and more efficiently.

Parts Required to Complete the 1911 Short Block

To finish your 1911 Short Block, you will 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

• Ejector and extractor

• 1911 pin kit

Why Choose the Government Tactical 1911 Short Block

In conclusion, the Government .45 ACP Tactical 1911 Short Block delivers a professional‑grade foundation built to full custom standards. Ultimately, this 1911 Short Block allows you to complete your pistol your way—while starting from a platform engineered for reliability, accuracy, and real‑world performance.

⚠️ 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