
TK Custom Tuned S&W Model 627 V-Comp Masterline Revolver | N Frame 8-Shot .357 Magnum
S&W 627 V-Comp Masterline – Tuned 8-Shot .357 Magnum Vault Gun
The S&W 627 V-Comp Masterline Vault Gun is an elite 8-shot .357 Magnum revolver tuned by hand with TK Custom’s Ultimate Master Action Job. This revolver starts with a factory Smith & Wesson Performance Center 627 V-Comp and is fully transformed in-house into a smooth cycling, competition-ready machine built for real shooters.
The 5-inch compensated barrel delivers controlled recoil and fast sight return, while the action is reengineered from the inside out with hand-polished stainless internal parts. Trigger pull is tuned between 6 and 9 pounds based on your preferred ammo, with clean reset and reliable ignition. The cylinder is chamfered and honed for fast moon clip reloads, and all tolerances are tightened for high-performance match use.
This model includes our complete Masterline upgrade package, featuring a Diamond Speed Hammer, TK Custom Steel Speed Trigger, and extended cylinder release of your choice. Every gun is built start to finish by Master Gunsmith Eli Johnson. No shortcuts, no drop-ins, just precision revolver work.
Each 627 V-Comp Masterline includes thirty blue steel moon clips and a full competition accessory package: loading tool, unloading tool, TK Custom soft case, microfiber towel, and gunsmith mat.
Key Features
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Availability: Ships in 14 Business Days!!!!
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MASTERLINE TUNING – Includes our Ultimate Master Action Job with full stainless internal replacement and hand-fit precision
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BUILT BY ELI JOHNSON – Each revolver is hand tuned and tested in-house by Master Gunsmith Eli Johnson
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COMPETITION READY CYLINDER – Chamfered and honed chambers allow for fast moon clip reloads under pressure
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FULL ACCESSORY PACKAGE – Comes with 30 blue steel moon clips, loading tool, unloading tool, soft case, microfiber towel, and gunsmith mat
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SIGHT SYSTEM – LPA black rear sight with Dawson Precision Red fiber optic front sight
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FINISH – Factory black frame with stainless comp and accents
Why Shooters Choose TK Custom
The Vault Gun series is for serious revolver shooters who want world-class performance right out of the box. Each Masterline revolver is built by hand with exact fitment of every component. This isn't a trigger job or a parts swap—it's a ground-up performance package trusted by USPSA, ICORE, and steel challenge competitors nationwide.
Spec Ops Profile
- Gunsmith: Eli Johnson
- Masterline Components Included: Diamond Speed Hammer (DAO), TK Custom Steel Speed Trigger, Extended Cylinder Release (long or short), Extended Firing Pin, Reduced Firing Pin Spring, Internal Lock Plug, Reduced Main Spring, 11LB Rebound Spring, Adjustable Strain Screw, Cylinder Chamfering, Cylinder Chamber Honing, Crane Alignment, Endshake, Polishing of Internal Radiuses, Barrel Clock Assessment
- Caliber: .357 Magnum / .38 Special
- Capacity: 8 Rounds
- Frame Size: N Frame (Large)
- Action: Double Action Only
- Barrel Length: 5 inches (Compensated)
- Weight: 46.7 oz
- Finish: Black Frame / Stainless Barrel & Compensator
- Sights: Dawson Precision Red Fiber Optic Front / LPA Black Rear
- Optic Ready: No
- Model: S&W 627 V-Comp
- Trigger Pull: Tuned to 6LB – 9LB Depending on Ammo
- Accessories Included: 30 Blue Steel Moon Clips, Loading Tool, Unloading Tool, TK Custom Soft Case, Microfiber Towel, TK Custom Gunsmith Mat
*Ensure compliance with your state firearm laws before purchase. Includes signature-confirmed insured shipping at a flat rate of fifty dollars.*
Built and tuned in the USA. Competition ready. Masterline approved.
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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