Lock a door with the pick
Just make sure it isn't already badly damaged so it doesn't go into ruined and you have to bash your way out lol.
The CR527 mag is as rare as rocking horse doo doo for me . I haven't found many and when i have, i never need it owing to an akm or some other primary already equipped. I'm doing a quick vid now on loot cycling in .50, and in about forty solid minutes of just looting one spot, mil tents, with a ton of respawning items i still only found two mags for the CR527. 7.62 x 39mm was off the charts though and having two mags gives you a quick change over time.
If you have a server you stick to and play experminetal i can dump a Cr527 in the bushes for you somewhere and you can take her for a run if you want. It should survive a couple of restarts before it vanishes into the ether