Mizugiwa 1inch /30mm Scope Adapter Ring/Mount with Picatinny/Weaver Top Rail for Backup/Second Laser Precision Machined Out of Premium 6061 Aircraft Aluminum Single Weaver-style 1inch /30mm scope adapter Comes with 25.4mm reducer inserts so you can use this with 30mm and 25 mm (1 inch) body tube rifle scopes. See Through Design, Weighs 1 ounces 5 slots picatinny/weaver rail for backup/Second Laser, sight or light