About 20 Guage Bore Sight Class IIIA laser, less than 5mW. Made to fit the 20 gauge chamber, caliber specific. Comes with 1 set batteries (3 AG13 batteries) which can last four hours. Fastest gun zeroing and sighting system. High accuracy, sighting range is 15 to 100 yards. Mounting Type：Picatinny Mount   CVLIFE Brand Story CVLIFE BORESIGHTER:                223REM Green Bore Sight       9mm Green Bore Sight        12GA Green Bore Sight       9mm Red Bore Sight   CVLIFE LASER BORE SIGHT:               12GA Red Bore Sight           223 Red Bore Sight     243 308 Red Bore Sight        20GA Red Bore Sight CVLIFE RED LASER BORE SIGHT:             30-06/25-06/270 Red            Bore Sight     7.62X54R Red Bore Sight       45acp Red Bore Sight   7.62x39mm Red Bore Sight   CVLIFE BORE SIGHT KIT:              Magnetic Bore Sighter       Magnetic Bore Sighter Multiple Caliber Laser Bore Sight Kit Bore Sight Kit Green Laser    CVLIFE RIFLE SCOPES: 3-9x40 Optics R4 Reticle Crosshair Scope 2.5-10x40e Red & Green Illuminated Scope Hunting Rifle Scope 6-24x50 AOE Red and Green Illuminated Gun Scope 3-9x40 Compact Rifle Scope Crosshair Reticle with Free Mounts CVLIFE RED DOT SIGHTS: 1X22X33 Red Green Dot Gun Sight Scope CVLIFE Tactical Gun Sight Red Green Dot Scope 1x28x40mm Red Dot Sight 4 Reticles Reflex Sight 1x22x33 Red Dot Sight 4 Reticles Reflex Sight CVLIFE 20GA Bore Sight Description The 20gauge red laser bore sight is your best choice! The specific align distance depends on the ambient brightness. Fast gun zeroing and aligning. Greatly save your time and ammo. Solid brass material. Not easy to damage, resistant to friction. 20 Guage Laser Bore Sight Specifications Laser Wave length (nm): 640 to 660 LED Type: Visible Red Laser Temperature: -10℃ to 40℃ Construction: Brass Align Range: 15 to 100 yards Package included: 1 X Bore Sight, 3 X LR44 Batteries Battery Life: 4 hours Power: <5 mW     Red Laser Bore Sight FAQs Q: Does the bore sight have an on/off button? A: No. The laser will automatically turn on after inserting batteries. Turning off the laser requires removing the batteries. Q: Why is the laser flickering unstable? A: If the laser flashes, the battery may be low, please replace it in time. Q: Is this a training bore sight? A: No. This is a laser bore sight used to assist with zeroing. CVLIFE Laser Bore Sight Picture & Link 20GA Laser Bore Sight 12GA Laser Bore Sight .223 Laser Bore Sight 9mm Laser Bore Sight LED Type Red Red Green Green Align Range 15-100 yards 15-100 yards 15-100 yards 15-100 yards Battery Life (One Set) 4 h 8 h 2.2 h 1 h Number of Batteries Included 3 x LR44 3 x LR44 12 x LR41 12 x LR41 Output Power ＜5mW ＜5mW ＜5mW ＜5mW Laser Class Class IIIA Class IIIA Class IIIA Class IIIA On/Off Button Switch ✘ ✘ ✘ ✘ Product information--Technical Details Item Package Dimensions L x W x H ‎3.1 x 2 x 1.1 inches Package Weight ‎0.11 Kilograms Brand Name ‎CVLIFE Color ‎Red, Gold Material ‎Brass Manufacturer ‎CVLIFE Sport Type ‎Hunting

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