Sightmark SM39016 Red Laser Boresight .40 S&W Brass Battery Case

The Sightmark SM39016 boresight eliminates guesswork when zeroing optics on .40 S&W firearms. This precision laser boresight projects a red dot exactly where the barrel points, allowing shooters to establish initial zero without firing a single round.

What Makes This Different

The SM39016 features a solid brass construction that matches the exact dimensions of .40 S&W ammunition for perfect chamber fit. Unlike cheaper plastic alternatives that can wobble or misalign, this brass boresight maintains consistent positioning shot after shot. The integrated red laser operates at 632-650nm wavelength for optimal visibility in various lighting conditions.

Key Features

• Solid brass construction matches .40 S&W cartridge dimensions precisely
• Class IIIA red laser (632-650nm) visible up to 100 yards in low light
• Complete kit includes battery pack and protective carrying case
• Compatible with all .40 S&W chambered pistols and carbines
• Quick activation button eliminates fumbling during setup
• Durable anodized finish resists corrosion and wear
• Compact design stores easily in range bag or toolbox

Range sessions become more efficient as the boresight establishes rough zero before live fire confirmation. Competition shooters use it to verify optic alignment between matches, while hunters rely on it for quick scope checks in the field. The laser remains stable during repeated chambering cycles, maintaining accuracy throughout the zeroing process.

Technical Specs

• Caliber: .40 Smith & Wesson
• Laser Type: Class IIIA red laser diode
• Wavelength: 632-650 nanometers
• Material: CNC-machined brass construction
• Power: Included battery pack system
• Visibility Range: Up to 100 yards in low light
• Includes: Laser boresight, battery pack, carrying case
• Weight: Approximately 0.8 ounces

Professional armorers and serious shooters choose brass boresights for their dimensional accuracy and longevity. The SM39016 represents proven technology that saves ammunition costs while improving initial zero precision.