^^^^^
We hope he meant "augment", not "replace"!!!
To the OP:
I did a bit of research for you. I cannot find a model number for a BOSS CR weight for a M70 Laredo in 7mm STW. However, the Laredo 7mm Rem Mag and the Laredo .300 Win Mag both use the #19606 CR. I'd bet that is the correct one for the 7mm STW. If you get the rifle, I suggest you try to find a CR for it. Once you have it in your hand, the important parameter is the actual physical weight. The vented BOSS brake and the BOSS CR should weigh the same.
In a quick search, I was not able to find a #19606. My guess is it is a rather uncommon one.
A machinist could make a perfectly good CR. It is not anything more than a thick walled tube with some female threads. Making a BOSS brake would be considerably more difficult, but a CR, not so much. However, I'm sure having one made would cost more than finding one. They seem to sell in the $30 range.
Hope this helps.
Last edited by GunDoc7; 03/21/19.
