Accessory

    Smith & Wesson Performance Center 640 .357 Magnum Accessory Compatibility & Recommendation Guide

    Product Compatibility Overview

    The Smith & Wesson Performance Center 640 .357 Magnum Revolver 2.125" Barrel 5-Round Black Cerakote Night Sights is a compact, high-performance revolver designed for concealed carry and defensive use. It features a robust stainless steel frame, Performance Center-tuned action, and factory-installed night sights. The revolver utilizes a 5-shot cylinder and is compatible with .357 Magnum and .38 Special ammunition.

    Accessory Mounting Systems:

    • The 640 does not include an accessory rail (Picatinny or M-LOK), limiting direct attachment of lights or lasers.
    • Grips are replaceable, allowing for ergonomic upgrades.
    • Sights are fixed, but some aftermarket options exist for compatible replacements.

    Essential Accessories

    • Speedloaders: Essential for rapid reloading. Recommended: Safariland Comp I/II or HKS 36-A speedloaders.
    • Speed Strips: Discreet and slim, ideal for pocket carry. Recommended: Bianchi Speed Strips.
    • Recoil-Absorbing Grips: Enhance control and comfort. Recommended: Pachmayr Compac or Hogue Monogrip.
    • Trigger Guard Lock: For basic safety when storing the revolver.

    Optics and Sighting Systems

    • Factory Night Sights: The Performance Center model includes tritium night sights, which are optimal for low-light use.
    • Aftermarket Sights: Options are limited due to the fixed sight design. Consult a gunsmith for installation of alternatives such as XS Sights Standard Dot front sight (requires professional installation).
    • Laser Grips: The most practical aiming enhancement. Recommended: Crimson Trace LG-305 Lasergrips (model-specific fitment for J-Frame revolvers).

    Tactical Enhancements

    • Grips: Upgrading to rubberized or finger-grooved grips improves recoil management and comfort.
    • Lighting Systems: Due to the lack of a rail, weapon-mounted lights are not directly compatible. Consider a handheld tactical flashlight for low-light readiness.
    • Laser Attachments: As above, grip-integrated lasers are the best option for this revolver platform.

    Performance Upgrades

    • Trigger Upgrades: The Performance Center model already features a tuned action. Further enhancement should be done only by a qualified gunsmith.
    • Custom Barrels: Not commonly upgraded on this model due to the integral design.
    • Internal Components: Upgrading springs (e.g., Wolff Spring Kit) can fine-tune trigger pull, but professional installation is recommended to maintain reliability and safety.

    Holsters and Carry Gear

    • IWB (Inside Waistband) Holsters: Recommended for concealed carry. Top choices: Galco Stow-N-Go, DeSantis Sof-Tuck.
    • Pocket Holsters: For deep concealment. Recommended: Uncle Mike's Pocket Holster.
    • OWB (Outside Waistband) Holsters: For range or open carry. Recommended: Safariland 567.
    • Considerations: Ensure holster is designed for S&W J-Frame 2" barrel models for proper fit and retention.

    Maintenance and Storage Accessories

    • Cleaning Kits: Compact revolver cleaning kits such as Otis Tactical Cleaning Kit or Hoppe’s No. 9 Kit.
    • Bore Brushes and Cloths: Sized for .357/.38 caliber.
    • Storage Solutions: Small handgun safes (e.g., Hornady RAPiD Safe) for secure storage.

    Budget Considerations and Value Analysis

    • Essential Accessories: Speedloader, quality holster, cleaning kit, and upgraded grips.
    • Optional Upgrades: Laser grips, premium holster, professional trigger tuning.
    • Best Value: Prioritize a reliable holster and speedloader for defensive use. Laser grips are a high-value upgrade for low-light accuracy.
    • Budget Options: HKS speedloader, Uncle Mike’s holster, Hoppe’s cleaning kit.
    • Premium Options: Crimson Trace Lasergrips, Galco leather holster, Otis cleaning system.

    Installation and Compatibility Guide

    • Professional Installation: Recommended for sight upgrades, trigger work, and internal spring kits to ensure safety and reliability.
    • DIY-Friendly: Grip replacement, speedloader use, and basic cleaning/maintenance.
    • Common Issues: Some aftermarket grips may interfere with speedloader clearance—verify compatibility before purchase.

    Brand Recommendations and Reviews

    • Top-Rated Manufacturers:
      • Holsters: Galco, DeSantis, Safariland
      • Grips: Hogue, Pachmayr, Crimson Trace
      • Speedloaders: Safariland, HKS
      • Cleaning Kits: Otis, Hoppe’s
    • User Reviews: Consistently positive feedback for Crimson Trace Lasergrips and Galco holsters for J-Frame revolvers. HKS and Safariland speedloaders are widely regarded for reliability.
    • Professional Assessments: Performance Center tuning is highly rated; further trigger work is rarely necessary.

    Legal and Safety Considerations

    • Federal Regulations: Ensure all accessories comply with ATF regulations. Laser and light attachments are legal in most jurisdictions but check local laws.
    • Concealed Carry Laws: Holster selection and carry method must comply with state and local concealed carry statutes.
    • Best Practices: Always use a trigger guard lock or safe for home storage. Practice safe handling and regular maintenance.

    Sources