Thunder Mountain Custom 1911 Slide Stop – .45 ACP | Stainless Steel | Serrated
Upgrade your .45 ACP 1911 with the Thunder Mountain Custom Serrated Slide Stop, built for shooters who demand precise control, exceptional strength, and long-term reliability. Unlike cast or metal-injection-molded parts, TMC CNC-machines every slide stop from a solid billet of stainless steel. As a result, each component delivers tighter tolerances, improved fit, and superior durability under demanding use.
Precision CNC Machining for Strength and Consistency
Because Thunder Mountain Custom machines each slide stop from solid billet stainless steel, the part maintains excellent structural integrity. Consequently, it resists cracking, bending, and premature wear, even during high round counts or hard use.
Moreover, tight tolerances ensure reliable engagement with the slide and frame, which improves lock-back consistency and smooth cycling. Therefore, shooters experience dependable performance whether training, competing, or carrying their pistol.
Serrated Paddle for Positive Thumb Engagement
The serrated paddle surface provides enhanced traction and tactile feedback. As a result, shooters can confidently engage or release the slide stop during reloads or malfunction clearance.
At the same time, the serrations balance grip and comfort. Consequently, the paddle remains easy to manipulate without feeling overly aggressive during extended shooting sessions.
Optimized for .45 ACP 1911 Pistols
This slide stop features a precision pin diameter of .200 – 2.005 inches, allowing proper engagement in .45 ACP 1911 platforms. However, because individual pistols vary by manufacturer, minor fitting may be required. When properly fitted, the slide stop delivers smooth cycling and consistent slide lock performance.
Durable Stainless Steel Construction
The stainless steel construction offers excellent corrosion resistance and long-term durability, making this slide stop ideal for duty, carry, or range pistols. Additionally, the finish maintains clean engagement surfaces while standing up to moisture, sweat, and frequent handling.
Backed by a Lifetime Guarantee
Thunder Mountain Custom stands behind this slide stop with a lifetime guarantee. Therefore, shooters can invest with confidence, knowing this component is built to perform for the life of the pistol.
Key Features and Specifications
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Caliber: .45 ACP
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Material: Stainless Steel
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Construction: CNC-machined from solid billet
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Paddle: Serrated for positive control
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Pin Diameter: .200 – 2.005″
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Fitment: May require minor fitting
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Warranty: Lifetime Guarantee





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