The Weaver 4-Hole Tactical Picatinny Rings are popular additions to many collections. These rings are comprised of solid metal, providing a secure fit on your firearm. The design is a new take on Weaver's classic and provides four screws. The unique design creates a piece that fits securely on your firearm, allowing flexible use of many upgrades. The improved crossbelt construction is made with a type III hard coat. This durability prevents slippage and stripping, allowing you a lifetime of use out the device.