Smith & Wesson Model 315 Night Guard
Smith & Wesson · Pistol · Discontinued · 2008
Also known as: 315NG, Model 315 NG
Overview
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.
Specifications
| Weight (empty) | 680 g (24.0 oz) |
| Overall Length | 190 mm (7.48") |
| Barrel Length | 64 mm (2.52") |
| Height | 127 mm (5.00") |
| Width | 38 mm (1.50") |
| Firing Mechanism | Double Action Single Action |
| Trigger Type | Double Action Single Action |
| Trigger Pull | 52 N (11.7 lbf) |
| Magazine Capacity | 6 rounds |
| Magazine Type | Rotary |
| Muzzle Velocity | 260 m/s (853 fps) |
| Muzzle Energy | 285 J (210 ft·lbf) |
| Effective Range | 40 m (44 yd) |
| Barrel Rifling | Right Hand |
| Rifling Twist | 457 mm (17.99") |
| Number of Grooves | 5 |
| Frame Material | Scandium Alloy |
| Barrel Material | Stainless Steel |
| Stock Material | Synthetic |
| Finish | Matte Black |
Calibers
- .38 Special +P · primary — also known as .38 Spl +P, .38 S&W Special +P
Features
- Firing modes: Semi Automatic
- Feed systems: Revolving Cylinder
- Safety mechanisms: Transfer Bar, Internal Lock
- 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
Production
Production years: 2008-2009
Extremely limited single-year production run; smallest frame in Night Guard series
Origin
Country of origin: United States
Discontinued: 2009
Notes
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.
Background
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.