This AR-15 M16 A1/A2 carry handle scope mount rail adapter for the AR-15 carry handle accepts NATO STANAG as well as weaver picatinny rings. Fits Colt AR-15 Sporter carry handle and Bushmaster rifles. Carry handle scope mount is See-thru so you can utilize the iron sights. Mount has self-locking thumb nut that fits snug in carry handle for continuous zero hold. Manufacture Lifetime Warranty. Fits Colt AR-15 M16 A1/A2 models carry handles Bushmaster rifle and more. Will also fit Mil-Spec removable carry handle for AR-15 and M4.