1911 Short Block – Commander – 45ACP – Tactical

1911 Short Block – Commander – .45 ACP – Tactical

First and foremost, our 1911 Short Block kits give do-it-yourself shooters and custom gunsmiths a proven head start using premium, duty-ready components. Instead of beginning with individual parts, this Commander .45 ACP 1911 Short Block arrives with the slide, frame, and barrel already precision fit. As a result, you save significant build time while also reducing overall project cost—without sacrificing performance or customization.

Moreover, we assemble every 1911 Short Block using the same components, methods, and tight tolerances found in our full custom pistols. Because of this approach, each 1911 Short Block delivers reliability, accuracy, and durability from the start. Consequently, this Commander Tactical platform works exceptionally well for defensive pistols, duty builds, and hard-use .45 ACP projects.

Features of the Commander .45 ACP 1911 Short Block

Oriskany Arms Commander Frame

At the foundation of the 1911 Short Block, the Oriskany Arms Commander frame provides strength, balance, and long-term reliability. First, Oriskany Arms precision casts the 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 ideal 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 recoil impulse feels more controlled. Additionally, 20-line-per-inch front-strap checkering enhances grip security during rapid fire. Ultimately, this frame gives the 1911 Short Block a rugged and dependable tactical foundation.

Oriskany Arms Elite Commander Slide

To complete the upper assembly of the 1911 Short Block, we pair 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 strength and longevity. Because this alloy provides excellent fatigue resistance and impact strength, the slide performs reliably under sustained use.

Furthermore, front and rear cocking serrations ensure a positive grip during slide manipulation. As a result, press checks and slide racking remain secure even under stress. In addition, standard dovetail sight cuts allow easy installation of duty or night sights.

Sight Cut Specifications

• Rear dovetail: .495 x 65 degrees

• Front dovetail: .330 x 65 degrees

Because these dimensions follow industry standards, sight upgrades on your 1911 Short Block remain simple and flexible.

Match-Grade Stainless Barrel – Commander 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 uses a tactical barrel configuration designed for reliability and consistent lockup while preserving classic 1911 performance.

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

Precision Slide-to-Frame Fit

We hold extremely tight tolerances on every 1911 Short Block slide-to-frame fit. Therefore, unwanted movement stays minimal during cycling. As a direct result, accuracy improves and the pistol tracks more consistently under recoil.

Precision Barrel Fit and Lockup

Likewise, our barrel fitting process includes a hand-fitted barrel bushing and carefully established lockup. Consequently, the barrel returns to the same position with every cycle, enhancing both accuracy and long-term reliability in your 1911 Short Block.

Included Components with the 1911 Short Block

Your Commander .45 ACP 1911 Short Block kit includes the recoil system and slide stop, allowing you to focus on final component selection and tuning.

Parts Required to Complete the 1911 Short Block

To finish 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 Commander .45 ACP 1911 Short Block

In summary, the Commander .45 ACP Tactical 1911 Short Block provides a professional-grade starting point built to full custom standards. Ultimately, this 1911 Short Block allows you to complete your pistol exactly the way you want—while beginning with a foundation engineered for reliability, accuracy, and hard use.

⚠️ 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