Sightmark Boresight Red Laser 223 Remington/5.56 NATO Laser Bore Sighter

The Sightmark Boresight is a chamber-mounted laser bore sighter for .223 Remington and 5.56x45mm NATO rifles. It is loaded into the chamber like a normal cartridge, and its red laser projects down the bore to show where the rifle is aimed, so the sights can be adjusted with fewer shots fired.

The unit has a brass outer case and a black finish. Its red laser operates at a wavelength of 632 to 650 nm and uses less than 5 milliwatts. The stated sighting range is 15 to 100 yards, with a 2-inch dot displayed at 100 yards. Battery life is approximately 1 hour, and the operating temperature range is 14 F to 122 F. A carrying pouch is included.

• Caliber: .223 Remington, 5.56x45mm NATO
• Mount type: Chamber
• Material: Brass
• Color: Black
• Laser wavelength: 632 to 650 nm
• Sighting range: 15 to 100 yards
• Battery life: Approximately 1 hour
• Operating temperature: 14 F to 122 F