(Glockmeister) - Designed from the ground up with the input of competitive shooters, GLOCK Armorers and law enforcement personel; our new Gen 4 dual captive stainless recoil assembly. It has undergone months of development and testing, which resulted in the ultimate recoil assembly for the GLOCK Generation 4 pistol. Designed to reduce recoil and muzzle flip, shooters will immediately notice the benefits of its heavy construction and precision design. These assemblies are more than twice the weight of the standard Gen 4 recoil assemblies and are guaranteed to be reliable and perform in the harshest conditions. They utilize the same spring weight as the stock recoil assembly with the addition of much stronger stainless steel components and higher grade springs which have twice the life of stock springs. All components are made in the USA and hand assembled by GLOCK Armorers. Shoot faster and more accurately with the Glockmeister Generation 4 dual captive stainless steel recoil assembly. The ultimate recoil assembly for the GLOCK Generation 4 pistol!