Take the guesswork out of sighting in your .44 Magnum pistol with the Sightmark Brass Laser Boresight-a must-have tool for shooters who demand fast reliable accuracy.Chambered just like a regular cartridge this intuitive red laser system projects a clear point of aim allowing you to align your scope or iron sights without firing a single shot.Constructed from high-quality brass for long-term durability and chamber fit this boresight is ideal for initial zeroing post-travel scope checks or as a training aid for dry fire and quick-draw drills.With a sighting range of 15 to 100 yards and performance in temperatures ranging from -10deg to 50deg (F or C) it's built to deliver dependable accuracy in real-world conditions.The boresight comes ready to use with three AG3 batteries and a protective carrying case for easy storage and transport making it a practical addition to any shooter's toolkit.Features / SpecsSightmarkSKU: SM39019.44 Remington Magnum Bore SightLaser Wavelength 632 - 650 nmLED Type Visible Red LaserOutput Power less than 5 mWBattery Type AG5 2Battery Type AG3 3Battery Life 1 hourRange for Sighting 15 - 100 yardsDot Size 2 in @100 yardsOperation on/off end capMaterial BrassOperating Temp 14F to 122FPrecision accuracyReliable and durableFastest gun zeroing and sighting systemReduce wasted cartridges and shellsRuns on Three AG3 BatteriesIncludes:Battery PackCarrying Case