The Ruger 90645 Factory 10-Round Magazine offers unmatched reliability designed specifically for the Mark IV and Mark III models. Engineered with precision, this product guarantees optimal performance with every use.Manufactured using durable steel, complemented by a robust polymer base plate, these magazines are built to endure the rigors of shooting while ensuring seamless functionality.Steel Body ConstructionPolymer Base Plate10-Round Capacity2-PackCompatible with Mark IV & Mark III 22 LRElevate your shooting experience with Ruger's trusted magazine technology.