1911 Short Block -Government – 45ACP – Classic

1911 Short Block – Government – .45 ACP – Classic

First and foremost, our 1911 Short Block kits give do-it-yourself shooters and custom gunsmiths a proven head start using high-quality components. Instead of starting from individual parts, this Government .45 ACP 1911 Short Block arrives with the slide, frame, and barrel already precision fit. As a result, you save valuable time and reduce overall build cost while still controlling the final configuration.

Moreover, we assemble every 1911 Short Block using the same components, methods, and tolerances applied to our full custom builds. Because of this approach, each 1911 Short Block delivers reliability, accuracy, and durability from the very beginning. Consequently, this platform works exceptionally well for traditional builds, duty pistols, and precision .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 and long-term reliability. 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 an ideal balance of durability and performance.

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 control under recoil. Ultimately, this frame gives the 1911 Short Block a rugged and economical foundation.

Oriskany Arms Elite Slide – Government 1911 Short Block

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

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

Sight Cut Specifications

• Rear dovetail: .495 x 65 degrees

• Front dovetail: .330 x 65 degrees

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

Match-Grade Stainless Bushing Barrel – Classic 1911 Short Block

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

Barrel dimensions are slightly oversized to allow for tighter lockup and a true match-quality fit. After machining, we heat treat and cryo stress relieve each barrel. Therefore, internal stress decreases and barrel life increases. Finally, precision broach-cut rifling delivers excellent accuracy with all bullet types, including lead.

Precision Slide-to-Frame Fit – 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.

Precision Barrel Fit and Lockup – 1911 Short Block

Likewise, our barrel fitting process includes a hand-fitted barrel bushing and carefully established lockup. Consequently, the barrel returns to the same position every cycle, improving both accuracy and reliability.

Included Components with the 1911 Short Block

Your Government .45 ACP 1911 Short Block kit also includes the recoil system and slide stop.

Parts Required to Complete the 1911 Short Block

To complete your 1911 Short Block, you will need 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

Why Choose the Government .45 ACP Classic 1911 Short Block

In summary, the Government .45 ACP Classic 1911 Short Block delivers a professional-grade foundation built to full custom standards. Ultimately, this 1911 Short Block allows you to finish your pistol your 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