What type / size of scope ring does a Falcon Menace 4-14 x 44 FFP Scope use. I went to the store and none fit?

What type / size of scope ring does a Falcon Menace 4-14 x 44 FFP Scope use. I went to the store and none fit it. I am mounting it on a remington 700 vtr .308. Also, does anyone no where you can find them.