What in the world are you talking about? You have me grossly confused here.
The CDL stock is identical to the LSS Mtn. Rifle stock in all dimensions except the inletting. The barrel on the CDL is thicker and longer. Otherwise all dimensions on these guns are the same. There is nothing squared about the CDL stock.
I hate detachable magazines which is the biggest reason I've not bought a standard Mtn. Rifle in .280 Remington. Well that and the fact I like laminated stocks and it won't do nuttin my 7-08 won't.
The new CDLs are pretty much what the Mtn. Rifle was when it first came on the market. The barrel contour is a wee bit thicker and longer. Otherwise they are pretty much identical to those old orginal Mtn. Rifles.