Acer-m14
20×102mm Vulcan
some of the comments are great .,. 30 sec's with a grinder LOL ..
Not to mention the AR, just push a pin and the trigger guard opens right up.1/4" hardended steel rod through the trigger guard? OK so whats that do for a Makarov? Literally 2 seconds tooless to release the guard. There are hundreds of long guns out there where the trigger guard comes off pretty easily as well. We wont get into the time to cut a 1/4" steel rod, because reasons.
Wonder what the plan would be for a 'smith who is working on a gun? Pack up all the parts every night?