The CMMG .22LR Survival Spring Kit is the perfect way to spruce up your CMMG 22lr conversion kit. These factory replacement springs will breathe new life into your old 22 training AR and keep you blasting through thousands of rounds of cheap practice ammo. Whether you use your rimfire AR-15 for training for just general plinking, this spring kit is necessary to keep it running through the many rounds to which rimfires are inherently subjected.Kit Includes:2 Recoil Springs2 Extractor Springs2 Firing Pin Springs