AK Alpha Series Top Cover ONLY for use with MI Alpha Series handguards - not compatible with other Midwest Industries generations or other manufacturers products. Patented components allow for an accurate return to zero solution for existing AK firearms Features adjustable locking block to fit on most AK firearms Midwest Industries recoil spring button made specifically for Alpha top cover Extremely rigid lockup ensuring dust and dirt does not enter firearm Utilizes two aluminum and two steel stability struts for a solid lock up. Allows user to maintain factory rear sight with lower 1/3 cowitness sight picture. No permanent modificat Mfg: Midwest Industries