Designed specifically for use with Midwest Industries AK Alpha Series handguards (MI-AK-ALPHA6, MI-AK-ALPHA10.0), this Alpha Series Railed Top Cover delivers a precision-fit upgrade to enhance optics mounting while maintaining AK reliability. It is not compatible with other Midwest Industries generations or products from other manufacturers. This system uses patented components to deliver a dependable return-to-zero solution for AK platforms. An adjustable locking block allows compatibility with most AK rifles, while two aluminum and two steel stability struts ensure an exceptionally rigid lock-up. The design effectively seals out dust and debris during operation and includes a custom recoil spring button made specifically for the Alpha Series system. The top cover allows for a lower 1/3 cowitness sight picture with the factory rear sight intact, and it requires no permanent modifications, allowing the firearm to be restored to factory configuration if needed. Compatibility Note:The included recoil spring button fits most AKM models with a rear trunnion width up to .440. Rifles with a .460 trunnion width will require a custom oversized button for proper fitment. When ordering, include a note if a wider trunnion is present to ensure the correct part is provided.