StrongTools Green BoreSighter for .17 to 12GA Caliber Rifle and Handgun Universal Hunting Green Dot Boresight Kit with Press Switch Bore Sight with 2 Pieces CR2 Batteries (2 Packs Adapter, Green)
Sightmark Magnetic Universal Boresighter - 146148, Bore Sighters at Sportsman's Guide
Firefield Red Laser Universal Boresight (Pink) FF39000 B&H Photo
Bushnell Universal Red Laser Bore Sight 7 Arbors .22-.50 Cal 740100C | Cheaper Than Dirt
Sightmark® Triple Duty Universal Green Laser Boresight | Sportsman's Warehouse
Amazon.com : Geyet Laser Bore Sight Kit for .177 to 12GA Caliber, Green Laser BoreSighter for Hunting, Universal Bore sighter with Button Switch for Multiple Caliber and Scopes : Sports & Outdoors
Air Rifle Universal Red Laser Bore Sight Kit .177 .50 Bore Sighter Collimator UK | eBay