Made in the usa, this magazine well insert assembly is designed to work exclusively with the ruger pc carbine.It accepts all ruger sr9 & security-9 9mm magazines.The flush-fit design is made from rugged, glass-filled polymer material for strength and durability.Note: the 5/32" hex wrench included with pc carbine is required for installation.Caliber: 9mm LugerFinish: BlackModel: Magazine Well Insert AssemblyMaterial: PolymerModel Fit: PC CarbineBrand Fit: Ruger