Newbie to this forum - say it quietly!

[Scoop]

Originally Posted by ranger dave

cz are one of my favorite guns but you have to mill the mags to fit the 300 whisper to work they have a large detent on each side of the mag good luck

Here's a picture of a modified CZ527 mag (originally a .223). Very simple to do. Just chuck it up in the end-mill (gently) and mill out the dimple. I only went down part of the way so that the relief cuts don't show when the mag is seated. Reduced capacity to 4 rounds instead of 5.