Machined from ordnance-grade steel and featuring a black oxide finish, these 34 mm, ultra-high scope rings from Badger Ordnance measure 1.490" to the center of the scope axis. They are designed for use with precision rifle barrel profiles, as well as with AR-series rifles, and are ideally-suited for use with most inline accessory optics (infrared and thermal imaging systems). Be sure to measure your rifle and scope to be certain of the minimum necessary scope ring height prior to making your purchase.