CVLIFE Laser Bore Sight for .17HMR/.177 Cal Red Laser Boresighter [Pre-Sale]

About Red Laser Bore Sight 【Easy to Use】 The end barrel laser bore sighter is more convenient to use: plug-and-play (without muzzle devices). Quickly and easily get you on paper. 【Supply of Replacements】 CVLIFE 17hmr laser bore sight comes with 4 sets of batteries and plenty of spare O-rings for replacements. Use 3 LR41 batteries at a time and the red laser will last up to 1.5 hours. 【High Accuracy】 The .17 laser bore sights are accurately calibrated from the factory and no further adjustment needed. Gets you much closer to your target without wasting time and money. 【Sturdy Construction】 17hmr/177cal bore sights are made of high-quality brass, sturdy and enduring. Premium O-rings hold the bore sight laser and protect the barrel from damage. 【Specification】 Designed to fit the .17hmr and .177 calibers. Class IIIA laser, less than 5mW. About CVLIFE Brand CVLIFE BORESIGHTER:    223REM Green Bore Sight       9mm Green Bore Sight        12GA Green Bore Sight