S&W M&P340 357 1.875″ FS 5-SH – XS NO LOCK

The S&W M&P340 is a 357 Magnum / 38 Special double-action-only J-frame built from a scandium alloy frame with a stainless steel cylinder, weighing 13.3 ounces with a 1.875-inch barrel. DOJ Roster listed and sold here at TacticCAL, it's the choice for buyers who want a serious-caliber snub-nose with tritium night sights and no internal lock.

The Off-Body-to-Pocket Transition Gun — Where the M&P340 Earns Its Place

The M&P340 sits in a specific slot: it's the revolver a Bay Area owner reaches for when a full-size or compact semi-auto isn't practical, but a .38 airweight feels like a compromise on capability. The 357 Magnum / 38 Special cylinder gives real flexibility — 38 Special for daily carry practice, 357 Magnum when the role demands it. At 13.3 ounces, it disappears in a quality Galco or Safariland pocket holster. The XS Sights 24/7 Tritium Night front sight addresses the low-light limitation that plain-black snub sights can't. No internal lock means the action is what S&W J-frame shooters expect from the platform. Double-action-only with a concealed hammer keeps the draw clean. Full selection of DOJ Roster certified handguns here.

Frequently asked questions

The M&P340 is listed as 'no lock' — does that affect how the revolver functions day to day?

No internal lock means there's no key-operated mechanism in the sideplate. The action runs the same double-action-only cycle as any J-frame; the 'no lock' designation simply means that mechanism was omitted from this specific SKU.

Is the scandium alloy frame durable enough for regular 357 Magnum practice, or should I stick to 38 Special?

The manufacturer describes the frame as scandium alloy with a stainless steel cylinder. Most owners use 38 Special for volume practice and reserve 357 Magnum for carry loads — the 1.875-inch barrel and 13.3-ounce weight make sustained 357 sessions uncomfortable regardless of frame material.

What should I do between buying the M&P340 at TacticCAL and picking it up after the 10-day wait?

Source both 38 Special and 357 Magnum ammunition for your first range session. Look into a pocket holster sized for the J-frame — Galco and Safariland both make options. Arrange a CA-compliant locked transport container for the drive home, and if children are in the household, have a lockbox ready before pickup.

Where can I ship an online gun order near San Jose?

TacticCAL Gun Store in Sunnyvale receives online firearm orders for buyers throughout the South Bay, including San Jose, Santa Clara, and the surrounding Bay Area.

How much does an FFL transfer cost in Sunnyvale?

See our pricing and fees page at https://tacticcalgunstore.com/pricing-and-fees/ for current FFL transfer rates — TacticCAL keeps fees flat and transparent.

Does TacticCAL help with CA compliant firearms?

Yes — TacticCAL specializes in California-compliant handguns from the DOJ Roster and PC §32100 exempt single-action revolvers. Need FFL transfer Daly City CA? Here's what to expect.

TacticCAL Gun Store Sunnyvale CA is your Bay Area FFL transfer dealer for California compliant handguns — same-day DROS Sunnyvale processing for San Jose and South Bay buyers.