I'm practicing my drawing skills in Turbocad Mac Pro version 3 (yes, i know I need to upgrade lol) by making this Sten MK 2 submachine gun. If you scroll down to pg. 3 you'll find the dimensions given for the tube like receiver; I'm having the hardest time making those notches shown on the tube. Tips anyone? http://files.weaponryonline.com/bluepri ... _mk2_a.pdf The receiver is given on page 2 that i'm talking about.