Broke mine trying to install-do not install the dummy round - Magpul Industries STR Mil-Spec Carbine Stock

As another reviewer has stated- DO NOT USE THE DUMMY ROUND TO TRY TO INSTALL THIS!!! Find a video online that tells you how to use a screwdriver on the lock. I learned too late. Magpul asked for trouble with the instructions included for this product. I snapped the plastic lock off completely trying to get my stock to install. Magpul has just sent a return label so I can swap it for a new one, so their service is very customer-focused. Super pleased with that. Heard from them faster then OpticsPlanet-which never happened still. Glad I wrote both. Haven't had any opportunity to use this yet b/c of the issue, but I expect good things from this stock since everyone else seems to like it.. Just a slow start getting there.