Skip to product information
Smith & Wesson S&W Pistol Model 659 Slide Stop Assembly 9MM - 0666320000 Part 666320000

Smith & Wesson Model 659 9mm Slide Stop Assembly — NOS OEM Part 066320000

$74.99

Smith & Wesson Model 659 9mm Slide Stop Assembly — NOS OEM Factory Part

New old stock (NOS) OEM slide stop assembly for the Smith & Wesson Model 659, a 2nd generation 9mm stainless steel double-stack semi-automatic pistol. This genuine S&W factory part (part #066320000) is manufactured to original factory specifications and tolerances. The slide stop assembly controls slide lock-back on the last round and manual slide release — a worn or damaged slide stop can cause failure to lock back or premature lock-up.

Specifications

  • Part Number: 066320000
  • Manufacturer: Smith & Wesson
  • Model: 659 (2nd Generation)
  • Caliber: 9mm
  • Part Type: Slide Stop Assembly
  • Condition: New Old Stock (NOS) — unused, original factory part

Model Compatibility Chart

Model Generation Caliber Frame Material Compatibility
Model 659 2nd Gen 9mm Stainless ✓ Compatible — listed model
Model 559 2nd Gen 9mm Blued Steel ⚠ Verify fit — same platform, different finish
Model 459 2nd Gen 9mm Alloy ⚠ Verify fit — same platform, alloy frame
Model 59 1st Gen 9mm Blued Steel ⚠ Verify fit — earlier generation
Model 5903, 5904, 5906 3rd Gen 9mm Various ✗ Not compatible — 3rd gen redesign
Model 39, 439, 539, 639 1st/2nd Gen 9mm Various ✗ Not compatible — single-stack frame
M&P Series (all) Modern Various Polymer ✗ Not compatible — striker-fired

Important Notes

  • This listing is for the slide stop assembly only. Slide stop spring, pin, and associated parts are sold separately.
  • >li>The Model 659 is a 2nd generation 9mm double-stack stainless steel pistol based on the Model 59 platform. Slide stop compatibility with other 2nd gen variants (559, 459) is likely but should be verified before ordering. >li>This is a

New Old Stock (NOS)

  • part — unused original factory inventory, not a reproduction. May show minor shelf wear consistent with age. >li>Disassembly and reassembly required. Some fitting by a qualified gunsmith may be necessary. >li>

We ship to U.S. addresses only.

  • All Smith & Wesson factory parts are subject to availability and may require backorder processing.

You may also like