1911 Short Block – Commander – 45ACP – Classic

1911 Short Block – Commander – .45 ACP – Classic

First and foremost, the Commander .45 ACP Classic 1911 Short Block provides builders, shooters, and professional gunsmiths with a balanced and proven starting point. Rather than assembling a pistol from individual components, this 1911 Short Block arrives with the slide, frame, and barrel already precision fit. As a result, you save valuable time, reduce labor costs, and still maintain complete control over the final configuration.

Moreover, we assemble every 1911 Short Block using the same components, machining standards, and fitting methods applied to our full custom pistols. Because of this process, the platform delivers reliability, accuracy, and durability from the very beginning. Consequently, this Commander‑length 1911 Short Block excels in classic carry builds, range pistols, and traditional .45 ACP projects.

Features of the Commander .45 ACP Classic 1911 Short Block

Oriskany Arms Commander Frame – 1911 Short Block

At the core of the 1911 Short Block, the Oriskany Arms Commander frame provides strength, balance, and proven performance. First, Oriskany Arms precision casts each frame from 4140 carbon steel. Next, CNC machining brings the frame to final dimensions. Then, controlled heat treatment to Rc 22–24 ensures an ideal balance of durability and machinability.

Because the frame rails are intentionally oversized, the gunsmith can achieve a tight and consistent slide‑to‑frame fit. As a result, mechanical consistency improves and accuracy increases. Additionally, front‑strap checkering enhances grip control during recoil. Ultimately, this frame gives the 1911 Short Block a rugged yet classic foundation.

Oriskany Arms Elite Commander Slide – 1911 Short Block

To complete the upper assembly, the 1911 Short Block pairs the frame with an Oriskany Arms Elite Commander slide. Specifically, we CNC machine the slide from 4140 bar‑stock carbon steel and heat treat it for durability. Because this alloy offers excellent fatigue resistance and impact strength, the slide performs reliably under extended use.

Furthermore, front and rear cocking serrations provide a positive grip during slide manipulation. As a result, racking and press checks remain smooth and controlled. In addition, standard dovetail sight cuts allow easy installation of a wide range of classic and modern sights.

Sight Cut Specifications – 1911 Short Block

• Rear dovetail: .495 x 65°

• Front dovetail: .330 x 65°

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

Match‑Grade Stainless Bushing Barrel – 1911 Short Block

Oriskany Arms match‑grade barrels are CNC machined in the USA from premium stainless steel bar stock. This Commander .45 ACP 1911 Short Block features a traditional non‑ramped bushing barrel design. Consequently, it preserves classic 1911 geometry while delivering modern reliability.

Barrel dimensions are slightly oversized to allow precise fitting and strong lockup. After machining, each barrel undergoes heat treatment and cryogenic stress relief. Therefore, internal stresses decrease 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.

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 reliability.

Included Components with the 1911 Short Block

To further streamline your build, the Commander .45 ACP Classic 1911 Short Block includes:

• Recoil system

• Slide stop

Because these components are already fit, final assembly proceeds faster and with fewer complications.

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 Commander .45 ACP Classic 1911 Short Block

In conclusion, the Commander .45 ACP Classic 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 balance, reliability, and classic 1911 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