Brownells' Retro Colt 4x20 - Zero Retention

We removed the Brownells' Retro Colt scope from my Colt SP1 for Mike to use it with irons only at DB2020. That brought up a question from a number of curious viewers: does it retain zero upon reinstall? Let's find out. InRange is entirely viewer supported: http://www.patreon.com/inrangetv