Looking for Aimpoint CompM4 spacer

[BoilerUp]

Anyone have a standard spacer for the Aimpoint CompM4 they'd spare / sell? I've had mine in a low config for an MP5 but want to move back to AR but can't figure out where I put the spacer.

[BoilerUp]

Ah, realized the Pro uses the same spacer, so I think I just need to dig out my box from storage...