Ok the differences in this design are as follows.

Its thicker, the magazine will only hold about 8 to 10 round, the scope is different, the muzzle break, and the bipod is thicker, and its BOLT ACTION!!

It shoots just about the same as its older brother the A version but its scope isn't as high a power as the A version and its a bolt action. This may be the last hoorah for the buttstock and trigger part of this design since I have over used it I will likely try and work out a new design to use due to the fact i've made seven or more designs using that buttstock.

Not real sure what else to say.

Enjoy~