Osprey Global 450 Bushmaster Red Laser Boresight Brass Small 450 Bushmaster Boresight. Made from durable brass it is easy to use precisely calibrated to position shots within 1.5 inches of center and backed by Ospreys lifetime warranty. Specifications for Osprey Global 450 Bushmaster Red Laser Boresight: Manufacturer: Osprey Global Fabric/Material: Brass Laser Output: 5 mW Weight: 34 g Wavelength: 635 - 655 nm Features of Osprey Global 450 Bushmaster Red Laser Boresight Ensures your first shot is on target saving you time and ammo. Package Contents: Osprey Global 450 Bushmaster Red Laser Boresight 3 LR41 batteries Osprey Global 450 Bushmaster Boresight: 450 Bushmaster Red Laser Boresight Brass Small