Mount Type Place: Barrel, Weaver, Picatinny Ring diameter: 25.4mm Usage: Change Your Barrel to Picatinny Weaver, Complete Solution for Mounting Flashlight Laser Sight Scope On The low profile scope ring can So BE installed on standard 20mm Weaver Alone, fully adjustable with nuts screws included Pack in Lirisy Exclusive Design Packing Box, Make It Different and Special, Good Gift to Your Boy Friend, Father, Grandfather.Pack in Lirisy Exclusive Design Packing Box, Make It Different and Special, Good Gift To Your Boy Friend, Father, Grandfather.The low profile scope ring can So BE installed on standard 20mm Weaver Alone, Fully Adjustable with Nuts Screws Included.Usage: Change your barrel to Picatinny Weaver, Complete Solution for Mounting Flashlight Laser Sight Scope On.Ring diameter: 25.4mm.Mount Type Place: Barrel, Weaver, Picatinny.Mount Type Place: Barrel, Weaver, Picatinny Ring Diameter: 25.4mm Usage: Change your barrel to Picatinny Weaver ,Complete solution for Mounting Flashlight Laser Sight Scope on The low profile scope ring can also be installed on standard 20mm weaver alone,fully adjustable with nuts screws included Pack in Lirisy Exclusive design packing box,make it different and special,good gift to your boy friend,father,grandfather.Pack in Lirisy Exclusive design packing box,make it different and special,good gift to your boy friend,father,grandfather. The low profile scope ring can also be installed on standard 20mm weaver alone,fully adjustable with nuts screws included. Usage: Change your barrel to Picatinny Weaver ,Complete solution for Mounting Flashlight Laser Sight Scope on. Ring Diameter: 25.4mm. Mount Type Place: Barrel, Weaver, Picatinny.XWXS 1" Inch Scope Mount Ring and Adapter, Tactical Flashlight Sight Mount Holder with 20mm Barrel Clamp Adapter Picatinny Weaver