The only real difference between the m700, m40a1, and acis is the stock its self the bolts and trigger assembly are basically the same. The only difference is the m40a1 has a shorter barrel then the others. What I am doing is taking a stock from a CAm24 and am going to mod it to fit the m700. When I get the stock I will make a how to, but im just waiting to buy it from some one on this site.
Also that stock might work, the hols seam to be in the right spot but I dont know if the metal piece around the trigger on the acis is the same as a m700, but i can look around for you and have a answer shortly.
Ok after some researching i found out that the upper assembly can be swapped only with a whole m24/m40 stock because of this piece.(in the yellow box)
You would need one like this to fit a m24/m40 style stock.(Again in yellow)
Hope this helped
Ok after some researching i found out that the upper assembly can be swapped only with a whole m24/m40 stock because of this piece.(in the yellow box)

You would need one like this to fit a m24/m40 style stock.(Again in yellow)

Hope this helped
