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Smith & Wesson · Pistol

Smith & Wesson Model 315 Night Guard

.38 Special +P · introduced 2008

Also known as 315NG, Model 315 NG

About the Smith & Wesson Model 315 Night Guard

The Smith & Wesson Model 315 Night Guard is a medium-frame K-frame revolver chambered in .38 Special +P, introduced in 2008 as part of Smith & Wesson's specialized Night Guard series designed for concealed carry and low-light defensive applications. Built on the company's traditional K-frame architecture using exotic scandium aluminum alloy construction, the Model 315 weighs just 24 ounces despite housing a stainless steel six-shot cylinder and 2.5-inch barrel. The Night Guard series was specifically engineered for law enforcement officers and armed citizens who needed a reliable backup or off-duty weapon optimized for reduced visibility conditions, featuring signature design elements including an XS Express tritium night sight with a prominent white dot surrounding the glowing tritium insert at the front, fixed rear sight, Pachmayr Compac synthetic grips that balance concealment with control, and a non-reflective matte black PVE (Physical Vapor Deposition) finish that eliminates glare while providing superior corrosion resistance. The Model 315 represents the smallest frame size in the Night Guard lineup, offering the lightest weight and easiest concealment while chambered in the time-tested .38 Special +P cartridge that has served American law enforcement for over a century. Production of the Model 315 Night Guard lasted only one year from 2008 to 2009, making it one of the rarest and most collectible variants in the Night Guard family.

The Model 315 Night Guard represents the culmination of over a century of K-frame .38 Special revolver evolution, combining the proven reliability of Smith & Wesson's most successful revolver platform with space-age scandium alloy technology and modern tritium night sights. Its brief one-year production run has made it a sought-after collectible among Smith & Wesson enthusiasts.

Smith & Wesson Model 315 Night Guard specifications

General

Type
Pistol
Firing mechanism
Double action single action
Trigger
Double action single action
Trigger pull
5.3 kg (11.7 lb)
Calibres
.38 Special +P
Magazine capacity
6 rounds
Magazine
Rotary magazine

Dimensions

Barrel length
64 mm (2.5 in)
Overall length
190 mm (7.5 in)
Height
127 mm (5.0 in)
Width
38 mm (1.5 in)
Weight (empty)
0.68 kg (1.50 lb)

Barrel

Rifling twist
1:18 in (457 mm)
Rifling
Right hand
Grooves
5

Materials

Barrel
Stainless steel
Receiver / frame
Scandium alloy
Stock
Synthetic
Finish
matte_black

Performance

Muzzle velocity (typical)
260 m/s (853 fps)
Muzzle energy (typical)
285 J (210 ft·lb)
Effective range
40 m

History

Introduced
2008
Discontinued
2009
Production status
Discontinued
Country of origin
US

Features

  • K frame
  • Tritium night sights
  • Scandium alloy frame
  • Stainless steel cylinder
  • Compact 2 5 inch barrel
  • Pachmayr compac grips
  • Xsexpress tritium front sight
  • Matte black pve finish
  • Fixed rear sight

Safety

  • Transfer bar
  • Internal lock

The Model 315 Night Guard was built on Smith & Wesson's traditional K-frame, which has been the backbone of American police revolvers since the 1899 introduction of the .38 Military & Police. The scandium alloy frame construction reduced weight by approximately 40% compared to traditional carbon steel K-frame revolvers like the Model 10. The 2.5-inch barrel length represents an optimal balance between concealability and ballistic performance for .38 Special +P ammunition, providing adequate velocity while maintaining a compact profile. The XS Express tritium front sight uses Swiss-made tritium inserts that glow continuously for approximately 12 years without batteries or external light sources. Original MSRP was approximately $960 USD. The lightweight scandium frame produces noticeably sharper recoil compared to steel-framed alternatives, particularly with full-power +P defensive ammunition. The matte black PVE finish is significantly more durable than traditional bluing and resists scratching, wear, and chemical exposure. Production ceased after the 2008-2009 production year, likely due to market preference for higher-capacity semi-automatic pistols for backup duty use.

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