Smith & Wesson Revolver Competition 617, 317, 63, 43c .22LR Extended Firing Pin
TK Custom Competition Extended Firing Pin – S&W .22LR Revolvers (617, 317, 63, 43 C)
Get match-ready ignition with the TK Custom Competition Extended Firing Pin—engineered for modern Smith & Wesson .22LR revolvers including the 617, 317, 63, and 43 C. This drop-in upgrade boosts reliability, reduces misfires, and helps support a lighter, smoother trigger pull—key for competition and high-volume training alike.
If you’re tuning your S&W rimfire revolver or struggling with inconsistent ignition from bulk-pack ammo, this is your fix. It’s precision-machined to improve contact force while staying drop-in ready with no fitting required.
Key Features
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NO DRY FIRING – Do not dry fire rimfire revolvers. This can damage the firing pin or chamber face. -
COMPETITION-GRADE PERFORMANCE – Designed for the 617, 317, 63, and 43 C revolvers in .22LR.
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NOT FOR PRE-LOCK MODELS – This part is designed for current production revolvers only.
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HELPS REDUCE TRIGGER PULL – Improves ignition efficiency and supports lighter action tuning.
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CONSISTENT IGNITION – Reduces light strikes with bulk and match-grade rimfire ammo.
Why Shooters Choose TK Custom
We build competition parts to do one thing: win. Whether you're chasing steel or squeezing out that last ounce of performance, this .22LR firing pin is designed to give you the edge. Tuned for precision. Built to perform. Backed by TK Custom experience.
Spec Ops Profile
- Part Name: Competition Extended Firing Pin – .22LR
- Fits: Smith & Wesson 617, 317, 63, 43 C
- Caliber: .22 Long Rifle
- Compatibility: Newer S&W models only – Not for Pre-Lock Revolvers
- Install Type: Drop-In, No Gunsmithing Required
*Quality you can see. Excellence you can feel.*
Free Shipping on orders over $250.00 in the USA only!
Smaller orders less than $250.00 are $9.95 for shipping.
No Free Return Shipping with Labor
No International Shipping, except to Canada.
$35.00
Canada - Priority Mail / NO Tracking Out side of USA
FREQUENTLY ASKED QUESTIONS
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Federal or Remington & others makes works the best with the .025 thick Full Moonclips, which fit all the .38/357 standard moonclip. They allow the cartridges to have some movement or wiggle so that they will fall right into the chambers once properly aligned. Winchester brass does not work at all as the groove width is too tight/small.
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Use this text block to discuss some commonly asked questions like shipping and returns, sizing, warranties, or product and company details.
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There is no SAAMI specifications for the extractor groove and each manufacturer makes them as they want. The following list gives you a great example. This is why the diameter size of the brass is critical to proper loading, unloading and fitment. Cartridge diameter too big and moonclip too small causes the moonclip to bend. The cartridge should rotate within their respective place and wobble slightly when all cartridges are loaded.
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If you are unsure about how to use moon clips for your revolver, or wondering which moon clip to use, call us. See the Contact menu tab.
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