Smith & Wesson Disconnector Models 39 59 410 411 1006 1026 1066 1076 1086 Factory OEM 104210000

Smith & Wesson Disconnector - Factory OEM Part

This is a genuine Smith & Wesson factory OEM disconnector for 2nd and 3rd Generation semi-automatic pistols. Part number 104210000 is a critical fire control component that prevents the pistol from firing unless the slide is fully in battery, ensuring safe and reliable operation.

Product Specifications

• Manufacturer: Smith & Wesson
• Part Number: 104210000
• Condition: Factory New
• Compatibility: Models 39, 59, 410, 411, 1006, 1026, 1066, 1076, 1086, 3904, 3906, 3913, 3914, 3944, 4003, 4505, 4566 (see full list below)
• Function: Disconnector
• Material: Steel
• Weight: 0.2 oz

Compatible Models

This disconnector is compatible with the following Smith & Wesson semi-automatic pistol models:

2nd Generation (Model 39/59 Series):

• Model 39 - 9mm, single-stack, alloy frame
• Model 59 - 9mm, double-stack, alloy frame

3rd Generation 10mm Models:

• Model 1006 - 10mm Auto, stainless steel, full-size
• Model 1026 - 10mm Auto, stainless steel, decocking lever
• Model 1066 - 10mm Auto, stainless steel, compact
• Model 1076 - 10mm Auto, stainless steel, compact, decocking lever
• Model 1086 - 10mm Auto, stainless steel, compact, double-action-only

3rd Generation 9mm Models:

• Model 3904 - 9mm, alloy frame, compact
• Model 3906 - 9mm, stainless steel, compact
• Model 3913 - 9mm, stainless steel, compact, bobbed hammer
• Model 3914 - 9mm, alloy frame, compact, bobbed hammer
• Model 3944 - 9mm, alloy frame, compact, double-action-only

3rd Generation .40 S&W Models:

• Model 410 - .40 S&W, alloy frame, compact
• Model 411 - .40 S&W, alloy frame, compact
• Model 4003 - .40 S&W, stainless steel, compact, double-action-only

3rd Generation .45 ACP Models:

• Model 4505 - .45 ACP, stainless steel, full-size
• Model 4566 - .45 ACP, stainless steel, compact

About This Part

The disconnector is one of the most critical safety components in the fire control system of Smith & Wesson semi-automatic pistols. This precision-manufactured part serves as a mechanical safety device that prevents the pistol from firing unless the slide is fully closed and locked in battery position. The disconnector performs several vital functions:

1. Out-of-Battery Safety: The disconnector physically blocks the trigger from releasing the sear unless the slide is fully forward and locked. This prevents accidental discharge if the trigger is pulled while the slide is out of battery.

2. Trigger Reset: After each shot, the disconnector separates the trigger bar from the sear as the slide recoils. This allows the sear to reset and catch the hammer, preparing the pistol for the next shot. When the trigger is released, the disconnector reconnects the trigger bar to the sear for the next trigger pull.

3. Single-Shot Function: The disconnector ensures the pistol fires only one shot per trigger pull by disconnecting the trigger from the sear during slide cycling, even if the trigger is held to the rear.

The disconnector must be precisely manufactured to exact tolerances to ensure it engages and disengages at the correct points in the firing cycle. It works in conjunction with the trigger bar, sear, and slide to provide safe and reliable semi-automatic operation.

A worn, damaged, or improperly fitted disconnector can cause dangerous malfunctions including failure to disconnect (potential for unintended full-auto fire), failure to reset the trigger, or failure to fire when the trigger is pulled. These issues can compromise both safety and reliability. Replacing it with a genuine Smith & Wesson factory part ensures proper disconnector function and safe operation.

Why Choose Factory OEM Parts?

When it comes to critical fire control safety components like the disconnector, using genuine Smith & Wesson factory parts ensures:

• Precise dimensions: Manufactured to exact Smith & Wesson specifications for proper fit and timing
• Reliable operation: Correct geometry ensures proper engagement and disengagement
• Quality materials: Proper steel composition and heat treatment ensure durability and resistance to wear
• Perfect compatibility: Designed specifically for 2nd and 3rd Generation pistols
• Long-lasting performance: Factory parts are built to withstand thousands of firing cycles
• Safety assurance: OEM parts meet Smith & Wesson's strict quality and safety standards

Installation Notes

Installation of the disconnector requires disassembly of the pistol frame and removal of the fire control components. This work should be performed by a qualified gunsmith if you are not experienced with Smith & Wesson semi-automatic pistol disassembly and reassembly. Proper installation, fitting, and function testing are critical for safe firearm operation.

Important: Always follow proper firearm safety procedures. Ensure your pistol is unloaded and pointed in a safe direction before performing any maintenance or parts replacement. After installation, verify proper disconnector function, trigger reset, and out-of-battery safety with snap caps before live fire.

About Smith & Wesson 2nd and 3rd Generation Pistols

Smith & Wesson's 2nd Generation (Model 39/59 series, 1970s-1980s) and 3rd Generation (four-digit models, 1980s-2000s) semi-automatic pistols are renowned for their quality construction, reliability, and innovative safety features. The disconnector is a fundamental safety component that has been part of Smith & Wesson's semi-automatic pistol design for decades. Maintaining these classic pistols with genuine factory parts ensures they continue to operate safely and reliably.

Note: This is a factory-new OEM part from Smith & Wesson. Always verify part compatibility with your specific pistol model before ordering.